Water-reducing agent solution for these three

The water-reducing agent should be used with concrete admixture, which will reflect the water reduction effect. Cement quality is therefore a direct factor of the actual effect of water-reducing agent.

Different cement types require different strategies when encountering "problem" cement.

High alkali cement

A cement that contains a lot of alkali is called high-alkali. Alkali in high-alkali is usually higher than that in conventional cement.

The high-alkali cements have a high degree of alkalinity. This can impact the performance. High-alkali Cement can encourage the setting reaction, which is beneficial to the early development of strength in concrete. High-alkali Cement can also increase the fluidity of cement, making it more workable and easier to pump.

But there are also some issues with high-alkali clinkers. As an example, high alkali cements can reduce the efficiency of water-reducing agents and cause concrete to lose its slump faster. High-alkali cement may also lead to corrosion and carbonation problems in the concrete.

High-alkali Cement can benefit from water-reducing agents containing a higher content of sodium sulfate. High-alkali cement contains a high amount of alkali, which accelerates C3A's dissolution. Sodium sulfate reacts with C3A, forming AFt crystals. This can improve the fluidity in cement mortar.

Low-alkali sulfur-deficient cement

Low alkali-sulfur cement is a cement with a lower sulfate level than normal cement. Ordinary cement is high in sulfate. It reacts with water and the sulfate forms crystals that cause cracks and expand the concrete.

Reduced sulfate cement reduces the impact of the Alkali-aggregate Reaction (Alkali-silica Reaction) in concrete. The alkali silica reaction in concrete is caused by the reaction between the cement and the aggregate's silicates. It causes expansion and cracking. The use of low-alkali cements that are sulfur-deficient can help reduce this reaction, and increase the durability and life of the concrete.

Due to the lower sulfate contents, water reducers work less well with low alkali-sulfur cement. Water-reducing agents can cause concrete to lose slump quickly if they are used in excess. In this case, the conventional method of using water-reducing agents may be ineffective. Instead, it is recommended to choose a water reducing agent that contains sulfate.

High C3A cement content

Cement with a high C3A-content is one that contains a large amount of C3A. C3A is a mineral found in cement which reacts with the water to produce an expansive substance when it hydrates. Cements with high C3A contents have a faster setting time and higher early strength. They are ideal for projects requiring rapid strength development and rapid setting.

Cement with a high C3A percentage can cause some problems. C3A and sulfate react to form sulphoaluminate. This can cause concrete to expand or crack. In humid environments, high C3A cements can produce corrosive Calcium Sulfate Precipitates, which may affect the durability of concrete and steel structures.

Cement containing high C3A has a higher adsorption rate of water-reducing agents. This will result in fewer fluidity and slump properties of concrete. If you are using a water-reducing chemical, choose a water-reducing chemical that has a high sulfate content or a retarder which contains hydroxycarboxylate. These will help reduce C3A adsorption and improve concrete fluidity.

There are two types of products that reduce water: one is the naphthalene product, and another is polycarboxylic acids. The main difference in water reduction is the naphthalene. It is high-efficiency, and polycarboxylic is high-performance. For general foam concrete, the naphthalene cubic addition is between a few hundred to a kilogram.

Application Fields of Graphite

Graphite - Applications

Graphite This non-metallic material is used widely in the industry and everyday life due to its high conductivity, resistance to high temperatures, and chemical stability. Here is a detailed description of how graphite can be used in various fields.

1. Application of graphite for refractory materials

Graphite's excellent resistance to high temperatures and corrosion makes it a popular material for refractory products. The graphite products are refractory materials, such as bricks, crucibles and high-temperature ovens. These products can be used to smelt and process high-temperature metals. They are corrosion-resistant and have high thermal stability.

The graphite bricks are widely used for kilns or heating furnaces. They can be found in many industries, including steel, nonferrous metals (such as aluminum), glass, ceramics etc. Graphite crucibles may be used to melt metals or alloys as well as for high temperature synthesis and sintering. Graphite furnaces at high temperatures can be used to heat and melt various metals or alloys as well as conduct high-temperature reactions.

2. Graphite as a Casting Material

Graphite can be used in the manufacture of casting molds and wear resistant parts. Graphite can be used to make non-ferrous castings, such as aluminum or copper. These have high accuracy and a long service life.

In the cast industry, graphite moulds can improve efficiency and reduce costs. Graphite molds have a high thermal conductivity and can easily transfer heat into the metal solution. This allows it to solidify faster, which improves production efficiency. The graphite moulds can also be reused many times, as they are resistant to wear and corrosion.

3. The Application of Graphite in Lubricants

Graphite can be used as a lubricant or grease because it has excellent lubricating qualities. Graphite lubricants reduce friction and improve the efficiency of mechanical equipment like machine tools and gearboxes.

Graphite lubricants can also be found in the aviation, military, and automobile industries. For instance, graphite can be used as a lubricant in automobiles for engines and transmission systems to reduce mechanical wear and improve fuel economy. In the aviation and defense fields, graphite grease can be used to improve the safety and reliability of equipment by lubricating components like high-speed rotating gears and bearings.

4. The Use of Graphite as Sealing Materials

Graphite can be used for sealing materials and components because it has excellent sealing and corrosion-resistant properties. Graphite sealings are used in a variety of chemical reaction kettles, equipment and other instances to prevent liquid and gas leakage.

Graphite seals can be used in many corrosive mediums and still maintain a good sealing performance. In addition, graphite sealings are also thermally efficient, which helps to reduce heat loss in equipment and improve thermal efficiency.

5. Graphite is used in the field of conductive materials

Graphite can be used as a heat-dissipation and conductive material due to its excellent thermal conductivity. Graphite conductives can be used for electrical contact materials like electrode brushes and heat-sinks for electronic parts.

Graphite conductive products, such as capacitors and batteries, are widely used in many fields. Graphite conductive material can be used in batteries as negative electrodes to increase the energy density of the battery and its lifespan. In capacitors, graphite materials can enhance the reliability and energy storage capacity of capacitors.

6. The Use of Graphite for Biomedical Applications

Graphite can be used as a biomedical material because of its biocompatibility. In biomedicine, graphite has been used to manufacture medical devices like artificial joints, fixed components, and surface-coatings of biomaterials.

Graphite can be used for its biocompatibility, wear resistance, and as a coating on artificial joints. This will improve the wear resistance of these joints and their life expectancy. In addition, graphite is a material with good thermal conductivity as well as biological activity. It can be used in surface coatings on biomaterials that promote tissue healing and regeneration.

7. Applications in other fields

Other than the above applications, graphite also can be used to produce pencil leads, electrode materials or battery-negative electro materials.

Graphite pencil lead is a traditional application of graphite. Pencil leads is durable, erasable, and is widely used by culture and education. Graphite electrolyte is the most commonly used electrode and is used widely in electrochemical reaction. In the battery field, graphite electrode materials such as lithium ion batteries are also widely utilized.

8. The following is a summary of the information that you will find on this page.

Graphite is a nonmetallic material that plays a crucial role in today's industrial and technical fields. The application prospects for graphite will remain very broad in the future with the constant development and progress of technologies. In order to improve the application of graphite, we must continue exploring and researching new uses and fields.

RBOSCHCO

RBOSCHCO, a global chemical materials supplier & manufacturer has over 12 year experience in providing high-quality Nanomaterials and chemicals. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. RBOSCHCO, a leading manufacturer of nanotechnology products, dominates the market. Our expert team offers perfect solutions to improve efficiency in different industries, create value and overcome various challenges. You can send an email at sales1@rboschco.com if you want graphite.

Application Fields of 316L Stainless Steel Powder

Stainless Steel Powder 316L - Application Fields

316L stainless steel Powder This metal powder is used widely in many fields because of its outstanding corrosion resistance. Here is a detailed guide to using 316L stainless-steel powder in various fields.

1. Aerospace field

316L stainless powder is used extensively in aerospace for the manufacture of high-strength components that are corrosion resistant. 316L stainless powder is a high-temperature, corrosion-resistant material that can be used to manufacture components with high strength and durability. In the production of jet engines for instance, 316L steel powder is employed to produce high-temperature parts such as combustion chambers and turbine blades which can withstand up to 600°C.

Additionally, 316L powder is used for manufacturing structural components of high strength in aerospace vehicles. These include beams and frames. Due to the excellent processing and weld performance, it is easily processed into various structural components, which ensure their dimensional stability and accuracy.

2. Petrochemical Industry

316L stainless powder is widely used in the petrochemical industries to make high-strength, corrosion-resistant pipelines and equipment. The 316L stainless steel powder has excellent corrosion resistance and can resist various chemical substances. This ensures the long-term stability of the equipment. In the manufacturing of petrochemical machinery, 316L stainless powder is used for high-temperature high-pressure pipelines and containers. This can withstand corrosion from various chemicals, while ensuring its sealing and strength.

Additionally, 316L stainless powder is used for manufacturing filters, separators, catalyst carriers, and other components within the petrochemical industry. Its high-temperature and corrosion-resistant properties can help ensure that equipment will operate reliably for a long time and increase production efficiency.

3.Medical field

In the medical field 316L powder stainless steel is widely used for manufacturing high-standard medical implants and devices. Due to the non-toxic, harmless and biocompatible effects of 316L stainless steel powder on the human body and its high-quality, it is widely used for the manufacturing of medical devices and human implants. In manufacturing artificial joints and prostheses as well as other implants, 316L Stainless Steel Powder is used for support structures and connectors. It ensures strength and stability as well as corrosion and wear resistance.

316L powder is used extensively in the medical industry to manufacture surgical instruments and medical devices of high standards. Its good welding and processing performance allows for the manufacture of complex-shaped medical equipment.

4. Industrial sector

In the industry, 316L stainless powder is widely used for manufacturing high-strength corrosion-resistant equipment and components. You can use it to make high-quality mechanical elements such as bolts, springs, chemical equipment and ship components. The excellent corrosion resistance and anti-oxidant performance of this material can help to ensure that the equipment will operate smoothly for a long time and increase production efficiency.

The power and electronic industries are also major users of 316L powder. 316L stainless powder is used in the manufacture of batteries and electronic components to produce components such as brackets, shells and terminals. These components can enhance quality and safety.

Summary: 316L stainless-steel powder is widely used in a variety of fields.

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KMPASS is a global supplier and manufacturer of high-quality nanomaterials, chemicals, and other materials. We have over 12 year experience. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. KMPASS, a leading manufacturer of nanotechnology products, dominates the market. Our professional team offers perfect solutions to improve the efficiency of different industries, create value and cope with various challenges. Send an email if you need 316L powder to: sales2@nanotrun.com

Application Fields of Nickel Based Alloys

Nickel Based Alloys: Applications

Nickel based alloy Based on nickel, it is made up of several alloying materials. It is used for its high-temperature properties, corrosion resistance and oxidation resistant as well as mechanical properties in the aviation, aerospace and petrochemical industries. This article will give a detailed description of the Applications of nickel-based alloys in different fields such as aerospace, petrochemicals and power energy. It also provides references for Research and Application.

Applications of nickel-based alloys to the aerospace industry

The aerospace sector is one important area for the application. Nickel-based alloys These are the main components used in aerospace to produce high-performance products like aircraft, rockets and satellites.

Aircraft engine components

Aircraft engines include:

The main equipment used in aviation.

* Material with outstanding high-temperature resistance is required.

* Corrosion resistant.

* Mechanical properties

Nickel-based metals exhibit excellent strength at high temperatures, as well as creep and fatigue resistance. The alloys are widely used for aircraft engine parts, including turbine blades and guides.

Rocket engine components

Rocket engines are key equipment in the launch of satellites and space probes. They require materials with extreme high-temperature strengths and corrosion resistance. Nickel-based alloys In the manufacture of rocket engines are commonly used key components like combustion chambers. nozzles and turbine disks.

Satellite structural components

Satellites' structural components need materials with high temperature resistance, corrosion resistance and dimensional stabilities. Many structural components, including solar panels and structural frame frames, are manufactured using nickel-based materials.

Use of nickel-based alloys for the petrochemical Industry

Nickel-based materials are also widely used in petrochemicals. Nickel-based alloys are mainly used in petrochemical equipment, such as high temperature and high pressure reactors and pipes.

High-temperature reactor

High-temperature Reactors are:

The basic equipment of the petrochemical sector.

* Material with outstanding high-temperature resistance is required.

* Corrosion resistant.

Mechanical properties

Alloys based on nickel have excellent mechanical, corrosion and high-temperature properties. High-temperature reactors like hydrogenation reactors or reforming reactors are made with these alloys.

High-pressure pipeline

In the petrochemical industries, high-pressure pipes are essential equipment. Materials with excellent corrosion resistance, high-pressure resistance and mechanical properties are required. Nickel-based materials are widely used for high-pressure pipe manufacturing because of their excellent high-pressure resistance, corrosion resistance and mechanical properties.

Applications of nickel-based materials in the field power energy

The electric energy sector is another area where nickel-based materials are used. These alloys are mainly employed in the manufacture of high-temperature exchangers, and gas turbines.

High-temperature heat exchanger

The high-temperature heat-exchangers in the power and energy industry are essential equipment. Materials with excellent resistance to corrosion, as well as mechanical properties, are required. Nickel-based materials have excellent mechanical, corrosion-resistant, and high-temperature properties. The alloys are widely used for high-temperature exchangers like air preheaters or flue gas exchangers found in coal-fired electricity stations.

Gas turbine blades

Gas turbines can be:

* Equipment for energy conversion and electricity generation.

* Material with outstanding high-temperature resistance is required.

* Corrosion resistant.

* Mechanical properties

In the manufacture of gas turbines such as blades or key components, nickel-based materials are used widely.

Applications of nickel-based alloys to biomedicine

Biomedical applications are another important area for nickel-based metals. These alloys are used to manufacture medical devices like artificial joints and vascular scaffolds.

Artificial Joint

Artificial joints can be:

* Medical devices which replace diseased joints.

* Materials that are highly corrosion resistant.

* Biocompatibility.

Mechanical properties

Alloys based on nickel have excellent corrosion resistance and biocompatibility. They are also used to manufacture artificial joints.

Vascular stent

Materials with high corrosion resistance, biocompatibility and flexibility are required for vascular stents. Nickel-based materials are highly corrosion resistant, biocompatible, and flexible and are widely used for vascular devices.

As a summary, nickel-based materials have been extensively used in aerospace and petrochemicals as well as power energy and biomedicine. In the future, with the continued development of technology and the use of nickel-based materials, they will become more widely used, contributing to industrial and technological development.

About KMPASS

KMPASS is a global supplier and manufacturer of high-quality nanomaterials, chemicals, and other materials. We have over 12 year experience. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. KMPASS, a leading manufacturer of nanotechnology products, dominates the market. Our expert team offers solutions that can help industries improve their efficiency, create value and overcome various challenges. You can contact us at sales2@nanotrun.com for Inonel 718 Powder.

Structure of Molybdenum Carbide Mo2C

Overview of molybdenum carbide Mo2C powder

The molecular formula of molybdenum carbide is Mo2C, the molecular weight is 203.88, and the carbon content is 5.89%. It is a dark grey metallic powder with a tightly packed hexagonal lattice. The density is 9.18g/cm and the melting point is 2690℃. As a new functional material, it has high melting point and hardness, good thermal and mechanical stability, and good corrosion resistance. It has been widely used for high temperature resistance, wear resistance and chemical corrosion resistance. Place.

Structure of Molybdenum Carbide Mo2C

Metal carbides are generally considered to have interstitial alloy structures. In common interstitial alloys, metal atoms are arranged in the form of face-centered cubic (FCC), hexagonal dense packing (HCP), and simple hexagonal (HEX), and non-metallic atoms enter the space between the metal atoms. The most common types of gaps between metal atoms are octahedrons and triangular prisms. The crystal structure of metal carbides depends on geometric and electronic factors. The geometric factor can be described by Hager's rule of thumb: when the atomic ratio of nonmetal to metal is below 0.59, simple crystal structures are formed. Interestingly, although metal carbides have simple crystal structures, few of these compounds have the same crystal structure as their parent metals. For example, molybdenum metal has a body-centered cubic structure, while its stable carbides have a hexagonal close-packed structure, and oxycarbides have a face-centered cubic structure. Another factor that determines the crystal structure of interstitial alloys is the electronic factor. The bonding in these compounds results from the cooperation between the sP orbitals of nonmetals and the SPD orbitals of metal atoms.

Application of Molybdenum Carbide Mo2C Powder

Molybdenum carbide is a new functional material with high melting point, high hardness and excellent corrosion resistance. It has been widely used in various fields of high temperature, wear resistance and chemical corrosion. It has similar noble metal electronic structure and catalytic properties.

1. Because its electronic structure and catalytic properties are similar to those of noble metals, molybdenum carbide can be widely used as a catalyst for reactions involving hydrogen, such as alkane isomerization, unsaturated hydrocarbon hydrogenation, hydrodesulfurization, denitration, etc.;

2. Molybdenum carbide is an important part of molybdenum carbide hard coating and other cermet coatings, and can also be used alone as wear-resistant and wear-resistant coatings;

2. Molybdenum carbide is widely used in hydrogen-related reactions such as alkanes;

3. Molybdenum carbide can be used to produce chromium-free special alloys and engineering ceramics;

4. Molybdenum carbide is used as superhard tool material, wear-resistant material, heating element material, high temperature structural material;

5. Molybdenum carbide is used to produce wear-resistant films and semiconductor films;

6. Molybdenum carbide can be used to manufacture special alloys and engineering ceramics without chromium;

Molybdenum carbide Mo2C powder price

The price of molybdenum carbide Mo2C powder varies randomly with the production cost, transportation cost, international conditions, exchange rate, market supply and demand and other factors of molybdenum carbide Mo2C powder. Tanki New Materials Co.,Ltd aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for Molybdenum Carbide Mo2C Powder, please feel free to contact us for the latest price of Molybdenum Carbide Mo2C Powder.

Molybdenum carbide Mo2C powder suppliers

As a global supplier of molybdenum carbide Mo2C powders, Tanki New Materials Ltd. has extensive experience in advanced engineering material properties, applications and cost-effective manufacturing. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics, structural devices, and provides OEM services.

Application of Aluminum Diboride AlB2 Powder

The Biden administration plans to ease sanctions on Venezuelan oil to allow more of the country's crude to reach Europe.  

The U.S. will allow European companies still operating in Venezuela to immediately transfer more oil to the continent, while allowing Chevron to negotiate a resumption of operations in Venezuela, according to people familiar with the matter.  Venezuela's OPPOSITION, which is backed by the United States, is understood to favor the move.  Tight global oil supplies have sent crude and fuel costs soaring, threatening to add to already high inflation.  Increasing Venezuelan crude exports would help ease supply constraints while also helping to reduce Europe's dependence on Russian energy.

The US has sought to encourage talks between the Venezuelan government and the US-backed opposition to open the way to free and fair elections by extending a limited license held by Chevron to allow the oil company to maintain its operations in Venezuela and negotiate future operations.  

The United States reportedly did not extend a permit to Allow Chevron to drill and sell Venezuelan crude, as the company had hoped.  

The license extension will allow Chevron to negotiate with State-run Petroleos de Venezuela SA, with which it has a joint venture.  Previously, the company could not directly negotiate with any officials sanctioned by the United States.  Chevron has been lobbying the United States to allow it to drill for Venezuelan crude and sell it on world markets to help lower energy prices amid the Russia-Ukraine war.

Affected by the ever-changing international situation, the supply and prices of many commodities like the Aluminum Diboride AlB2 Powder,Overview of Aluminum Diboride AlB2 Powder,Application of Aluminum Diboride AlB2 Powder,Aluminum boride AlB2 powder price,Aluminum boride AlB2 powder supplier are still very uncertain.

Overview of Aluminum Diboride AlB2 Powder

Aluminum boride (AlB2) is a binary compound formed from aluminum and boron. It is a red solid under normal temperature and pressure. It loses surface gloss when heated. Stable in cold dilute acid, decomposed in hot hydrochloric acid and nitric acid.

Aluminum boride (AlB2) is one of two compounds of aluminum and boron, the other being AlB12, commonly known as aluminum boride. AlB12 is a black glossy monoclinic crystal with a specific gravity of 2.55 (18°C). It does not dissolve water. The AlB2 single crystal is parallel to the hexagon of the substrate.

The structure of aluminum diboride (AlB2) is similar to that of graphite flakes. There is an Al atom between the B atom and the B atom, which is very similar to the structure of magnesium diboride. AlB2 single crystals exhibit metallic conductivity along an axis parallel to the hexagonal plane of the substrate.

Aluminum boride is considered a hazardous substance because it reacts with acids and hydrogen to produce toxic gases. For example, it reacts with hydrochloric acid to liberate borane and aluminum chloride.

The crystal structure of AlB2 is often used to describe the prototype structure of intermetallic compounds. There are various structural types in the AlB2 structural family.

Application of Aluminum Diboride AlB2 Powder

Aluminum boride is an ionic compound with a hexagonal crystal structure. Aluminum boride with an absolute temperature just above 40K (equivalent to -233°C) becomes a superconductor. Its actual working temperature is 20 ~ 30K. To achieve this temperature, we can use liquid neon, liquid or closed cycle refrigerators to accomplish cooling. These methods are simpler and more economical than the current industrial use of liquid helium to cool niobium alloys (4K). Once doped with carbon or other impurities, magnesium diboride retains superconductivity as good or better than niobium alloys in a magnetic field, or with an electric current flowing through it.

Aluminum boride is a random (or rhombic) white or pale yellow powder. Can be used as: non-toxic flame retardants, plastics, rubber, textiles, coatings, superconducting magnets, transmission lines, sensitive magnetic field detectors.

Aluminum boride AlB2 powder price

The price of aluminum diboride AlB2 powder varies randomly with factors such as production cost, transportation cost, international market conditions, exchange rate, and market supply and demand of aluminum diboride AlB2 powder. Tanki New Materials Co.,Ltd aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for aluminum diboride AlB2 powder, please feel free to contact us for the latest price of aluminum diboride AlB2 powder.

Aluminum boride AlB2 powder supplier

As a global supplier of aluminum diboride AlB2 powders, Tanki New Materials Ltd. has extensive experience in advanced engineering material properties, applications and cost-effective manufacturing. The company has successfully developed a series of boride powder materials (including aluminum diboride AlB2 powder, molybdenum boride, tungsten boride, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.

Trafigura, one of the world's largest metals traders, is to take a stake in a new company to supply car and battery makers in Europe with lithium from a refinery in the UK, the Financial Times reported. As part of the investment, Trafigura will seek raw material for Green Lithium, which plans to build a plant in the north of England capable of producing 50,000 tonnes a year and sell the finished Aluminum Diboride AlB2 Powder,Overview of Aluminum Diboride AlB2 Powder,Application of Aluminum Diboride AlB2 Powder,Aluminum boride AlB2 powder price,Aluminum boride AlB2 powder supplier, etc. If you are looking for high-quality materials, please feel free to contact us and send an inquiry.

The preparation method of lithium sulfide

Lithium Sulfide Overview

Lithium sulfide, molecular formula: Li2S, is lithium sulfide, molecular weight: 45.95. White to yellow crystals. Has an anti-fluorite structure. The specific gravity is 1.66 (water = 1), the melting point is 938°C, and the boiling point is 1372°C. Soluble in water, soluble in ethanol, soluble in acid, insoluble in alkali. as a potential electrolyte material in rechargeable lithium-ion batteries.

The preparation method of lithium sulfide

Lithium sulfide can be prepared by a variety of methods. In the past, lithium and sulfur have been co-heated for reaction, and lithium sulfide has been prepared by reducing lithium sulfate with carbon or hydrogen under heating conditions. Later, it was found that lithium sulfide can be obtained by the action of lithium and sulfur in liquid ammonia, or by the decomposition of lithium ethoxide into the ethanol adduct of lithium hydrosulfide. Since then, some people have used lithium pentoxide to react with hydrogen sulfide to first obtain lithium hydrosulfide, and then decompose lithium hydrosulfide in vacuum to prepare lithium sulfide.

High quality anhydrous lithium sulfide can be prepared by reacting metallic lithium with hydrogen sulfide in tetrahydrofuran.

Application of lithium sulfide Li2S powder

Lithium sulfide (Li2S) is a product specially designed for high-performance batteries and can be used as an electrode material or as a precursor for solid electrolytes. As an electrode material, it not only has high capacity, but also overcomes many problems brought by pure sulfur electrodes.

The lithium sulfide Li2S powder is an anti-fluorite semiconductor (with a band gap of 3.865 eV). It exists in orthogonal and cubic structures. The densities of the orthorhombic and cubic structures are 1.75g/cm3 and 1.63g/cm3, respectively.

Lithium sulfide Li2S powder has been studied as a superconductor similar to MgB2. It is also used as a cathode material for rechargeable lithium-sulfur batteries.

Lithium sulfide Li2S powder price

The price of lithium sulfide Li2S powder will change randomly with the production cost, transportation cost, international situation and market supply and demand of lithium sulfide Li2S powder. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for lithium sulfide Li2S powder, please feel free to send an inquiry to get the latest price of lithium sulfide Li2S powder.

Lithium sulfide Li2S powder supplier

As a global lithium sulfide Li2S powder supplier, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (chromium sulfide, zinc sulfide, nickel sulfide), high-purity target materials, functional ceramics and structural devices, and provides OEM services.

Preparation method of tungsten oxide

Hasad Foods, the agricultural investment arm of Qatar's sovereign wealth fund, said the government would increase its grain reserves from 250,000 tons to 300,000 tons in the near future, which is enough to feed the population for six months.  

With a lot of deserts, Qatar suffers from water shortages, and Qatar depends on food imports for a long time. Recently, the ongoing tension in Ukraine has caused global food supply tension and rising prices.

In addition to that, the geopolitical situation also affects the supply and prices of many commodities like the tungsten oxide, tungsten oxide overview, tungsten oxide application, tungsten oxide supplier, tungsten oxide price.

Tungsten oxide overview

Tungsten trioxide is a powder metallurgy raw material for the production of cemented carbide and tungsten products. According to the national standard (GB/T 3457-1998), it is divided into two types, namely tungsten trioxide (referred to as yellow tungsten), molecular formula is WO3, and blue tungsten oxide (referred to as blue tungsten, is a mixed tungsten oxide), molecular formula W20O58. Yellow tungsten is light yellow crystalline powder, blue tungsten is dark blue or blue-black crystalline powder.

Preparation method of tungsten oxide

1. Ammonium tungstate method: The tungsten concentrate is hydrolyzed by sodium hydroxide, neutralized with hydrochloric acid, and then reacted with ammonium chloride to generate ammonium tungstate, which is then added with hydrochloric acid for acid hydrolysis to generate tungstic acid, which is then decomposed by roasting. , pulverized to obtain tungsten trioxide.

2. Hydrochloric acid decomposition method of tungstate. The saturated aqueous solution of sodium tungstate Na2WO4, calcium tungstate CaWO4 and other tungstate salts is heated, and the solution is slowly added dropwise into 2-3 times excess boiling concentrated hydrochloric acid by molar ratio. According to the above reaction, yellow tungstic acid is precipitated. At this time, if the dripping speed is too fast or the liquid temperature drops, suspension or colloidal precipitation is likely to be formed, which brings difficulties to the next treatment. After the dropwise addition, heating was continued on a water bath for 1 h, and the precipitate became easy to filter. After standing, it was washed several times with 5% ammonium nitrate aqueous solution to completely remove Cl-. After filtration, it is dried at 120 °C, and finally heated to 600 °C, the tungstic acid is completely dehydrated and becomes tungsten trioxide.

3. Thermal decomposition of ammonium paratungstate. Put ammonium paratungstate (NH4) 10W12O41·11H2O purified by recrystallization method into a porcelain crucible, and when heated to above about 400 ℃, ammonia volatilizes to obtain tungsten trioxide.

Application of tungsten oxide WO3 powder

Tungsten oxide has a variety of uses in daily life. It is commonly used in the manufacture of phosphors for industrial X-ray screens and tungstates for fire-resistant fabrics. Due to its rich yellow element, tungsten oxide is also used as a pigment in ceramics and paints. In addition, other application examples of tungsten trioxide are as follows:

Tungsten oxide is mainly used in the production of tungsten powder and tungsten carbide powder by calcination reduction, and is further used in the production of cemented carbide products, such as the manufacture of tools and molds.

Tungsten oxide can also be used to manufacture pure tungsten products, tungsten rods, tungsten wires, tungsten electrodes; and use counterweights and radiation shielding materials.

In industrial production, a small amount is also used as a colorant for yellow ceramics. In the shipbuilding industry, tungsten oxide is used as an important anti-corrosion paint and coating material.

Tungsten oxide has been used to produce electrochromic windows, smart windows. These windows are electrically switchable glass that varies in light transmittance and applied voltage. This allows users to tint their windows by changing the heat or light.

Tungsten oxide WO3 powder price

The price of tungsten trioxide powder will change randomly with the production cost of tungsten trioxide powder, transportation cost, international situation, exchange rate, market supply and demand and other factors. Tanki New Materials Co.,Ltd aims to help various industries and chemical wholesalers find high-quality, inexpensive nanomaterials and chemicals by providing turnkey custom manufacturing services. If you are looking for tungsten oxide WO3 powder, please feel free to send an inquiry to get the latest price of tungsten oxide WO3 powder.

Tungsten Oxide WO3 Powder Supplier

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What is a polycarboxylate superplasticizer

In 2023, the China Greater Bay Area Concrete Industry High-Quality Development Seminar and the Expo on Concrete Equipment and Technology will take place at the Guangzhou Canton Fair Complex. Guangzhou Canton Fair Complex. The conference's theme will be "Gathering Talents and Gathering Power, Talking about Smart Concrete," co-sponsored by the Guangzhou Concrete Industry Association and Guangdong Hongwei International Exhibition, responsible persons from the Guangzhou Municipal Bureau of Housing and Urban-rural Development, Municipal Bulk Cement and Building Energy Conservation Management Center as well as Concrete Industry Experts as well as representatives from downstream and upstream companies participated at the show.

A concrete core sample 200 millimeters in diameter and an overall long 25.3 meters was successfully removed from the RCC gravity dam in the Fengshan Reservoir Project in Qiannan Buyi and Miao Autonomous Prefecture, Guizhou Province, China. The length of the core sample is the longest among water conservancy projects within Guizhou Province, marking that the quality of construction and technology of the dam in the Fengshan Reservoir Project has reached the top standard.

The concrete pouring for the first warehouse at the Qishi Junction of the Pinglu Canal in China has started, which signifies that the three main points of operation for the Pinglu Canal have entered a new phase of building the main structure. This Pinglu Canal is the backbone of the land-sea channel that runs through the west. When it is finished and open to navigators, the canal will let the world's narrowest, most cost-effective, and most efficient ocean channel between Guangxi and Southwest China.

1. What is a polycarboxylate superplasticizer?

Polycarboxylate superplasticizer is used primarily in cement concrete to act as a dispersant. It is composed of polymers containing sulfonic acid group (-SO3H) and carboxyl groups (-COOH) or derivatives of them and features high efficacy, environmental protection, and security.

The role of a polycarboxylate superplasticizer is primarily to disperse cement particles more evenly by adhering to concrete particles' surfaces, decreasing the amount of water needed, and increasing the strength and flexibility of concrete in the process. Compared to traditional water-based water-reducing agents, polycarboxylate agents have a higher water reduction rate and workability that can significantly enhance the performance and strength of concrete.

2. Superplasticizers that are applied to polycarboxylate.

Polycarboxylate Superplasticizer is commonly employed in cement concrete as a dispersant. Apart from its use in bridges, highways, tunnels, dams, high-rise buildings, and various other engineering areas, it is extensively utilized for grouting, pouring material such as anchoring, plugging the waterproof mortar K11 cement self-leveling, prefabricated components, special mortars, and various other construction materials. The applications of polycarboxylate superplasticizers in these areas will be described below.

1. Highway Engineering

In highway engineering, superplasticizers made of polycarboxylate are used to make high-performance highway concrete, which can increase durability and wear endurance on the surface of roads. The superplasticizer polycarboxylate's water-reducing capacity can significantly reduce water consumption in concrete, increase concrete's strength and flexibility, and make the road surface more dense, smoother, other, smoother, and more robust. The use of polycarboxylate superplasticizers in highway engineering will fulfill the highway construction's safety, green, and durability demands.

2. Bridge Engineering

When it comes to bridge design, superplasticizers made of polycarboxylate can be used to create bridge concrete with great strength and fluidity to increase bridges' bearing capacity and service life. The high water-reducing capacity and high workability of the polycarboxylate superplasticizers can significantly enhance Bridge concrete's performance, increase the uniformity and compactness of concrete, lessen the formation of bridge cracks, and consequently increase the longevity and safety of bridges.

3. Dam Project

When it comes to dam design, superplasticizers made of polycarboxylate are used to make high-strength, high-impermeability dam cement to increase the stability and security of the dam. Dams are an essential structure that stores water resources and manages water flow. It also has demanding requirements for the stability and safety that the dam. Utilizing polycarboxylate superplasticizers will increase the resistance and impermeability of concrete dams and effectively stop cracks and leakage, improving the dam's stability and security.

4. Tunnel Engineering

Tunnel engineering is a field where superplasticizers of polycarboxylate are used to make high-strength and high-impermeability tunnel concrete to increase the durability and stability of the tunnel. Tunnels are crucial underground structures used for transport and transport, so the requirements for durability and stability of tunnels are demanding. Using superplasticizers made from polycarboxylate will increase the durability and strength of tunnel concrete. It can effectively stop cracks and leaks, improving the tunnel's durability and stability.

5. High-rise buildings

In high-rise structures, Polycarboxylate superplasticizers are employed to make high-strength, highly-fluidity concrete for high-rise buildings to improve the safety and stability of structures. Because of the number of floors and the high building heights, their requirements for the strength of the structure and seismic performance of buildings are extremely significant. Utilizing polycarboxylate superplasticizers will enhance the strength and flexibility of high-rise concrete. It can significantly improve the strength of structures and the earthquake performance of structures, increasing the stability and security of structures.

6. Material pouring, grouting anchoring, plugging, and many more fields.

Apart from its use in engineering fields like dams, bridges, road tunnels, and high-rise structures, polycarboxylate superplasticizers are extensively used in construction materials, such as grouting agents and pouring materials, as well as anchoring and plugging. In these areas, the function of superplasticizers made from polycarboxylate is mostly by adsorption on the surfaces of cement particles, ensuring that the cement particles become more evenly distributed, thus reducing the quantity of water needed while at the same time improving the quality and consistency in the materials. These applications can fulfill various specific maintenance and construction requirements.

How do you make polycarboxylate superplasticizers?

Polycarboxylate superplasticizer is extensively utilized in cement concrete to act as a dispersant. The process of making it can be broken down into the steps below:

synthetic macromonomer

It is first necessary to create macromonomers. This is one of the primary processes in producing superplasticizers from polycarboxylate. The macromonomer is the primary component of the superplasticizer polycarboxylate that has polymer chains and polar company and can be adsorbed on the surfaces of cement particles to be superplasticizers. The most popular method used is free radicals' polymerization; the primary raw materials include unsaturated acids, such as methacrylic acid, acrylic acid, and maleic acid, and polymers like polypropylene glycol and polyethylene glycol. In the process of synthesis, it is crucial to regulate the temperature of the reaction and time, as well as the proportion of ingredients and other variables, to ensure the yield and quality of the macromonomer.

Polymerization

Once the macromonomer has been synthesized, a polymerization reaction is necessary. The polymerization reaction will react to the macromonomer using an oxidizing agent, such as ammonium persulfate, to create one with a higher level of polymerization. When performing this procedure, it is important to be aware of variables like reaction temperature and the time and quantity of oxidant used to ensure the polymerization process's efficiency as well as the quality of the product.

Post-processing

After the polymerization reaction is complete, post-treatment is needed. The post-treatment process involves dissolving the water and polymer to the ratio specified, adding acidic compounds for neutralization, adjusting the pH that the solution has, and then the addition of a protective colloid as well as other components to produce the final superplasticizer made of polycarboxylate. It is essential to regulate the amount of solution, the pH value, the kind and amount of protective colloid, and other variables to guarantee the quality and effectiveness of the solution.

4. Market prospects analysis of superplasticizer polycarboxylate

Due to the rapid growth in the field of construction, demand for polycarboxylate superplasticizers is growing, and the opportunities are vast. This article will examine the potential market for superplasticizers made from polycarboxylate based on the demand for market products, the policy environment, technological advancement, competition patterns, and the latest trends.

1. Market demand

As urbanization is accelerating and the continued development in infrastructure development, the demand for cement concrete has been growing each year, driving the demand for superplasticizers made of polycarboxylate. Polycarboxylate superplasticizer offers the benefits of an excellent water-reducing capacity, a high working capacity, a lower shrinkage rate, and so on. It can also significantly enhance the performance and durability of concrete. This is why it is extensively used in engineering areas such as bridges, roads, dams, tunnels, and high-rise structures. A lot of people use it. As the years progress, due to the constant advancement in infrastructure construction and the constant improvement in the quality of buildings, the need for polycarboxylate superplasticizers will continue to increase.

2. Policy environment

After the pandemic struck the world, various policies for improving the construction industry have been introduced, and across the globe are now recognizing the importance of infrastructure to spur economic development. One of them is the Chinese "Outline for the Modernization of the Construction Industry," which recommended that by 2030, the size of the construction industry would reach the target of around 20% of the nation's GDP. In the meantime, China's standards for environmental protection and conservation of energy are getting strict, and this provides an incentive for policymakers to develop superplasticizers that are made of polycarboxylate. Similar policies have been enacted across China to encourage and facilitate the manufacturing and utilization of polycarboxylate superplasticizers. Also boosting demand for superplasticizers made of polycarboxylate.

3. Development of technology

With the constant advancement of new technology and science, polycarboxylate superplasticizers' manufacturing technology and performance are constantly upgraded. Today, superplasticizers made by polycarboxylate manufacturers from around the globe are continuously pursuing technological research, development, and development and have introduced an array of brand new superplasticizers made of polycarboxylate including high water-reducing models and high slump retention varieties and those with low shrinkage. Wait. Introducing these products will further expand the scope of polycarboxylate superplasticizers' applications and market spaces.

4. Competitive landscape

The polycarboxylate superplasticizer market has developed into a remarkably competitive pattern of fierce competition. Certain well-known and well-known foreign construction materials firms are using the market for polycarboxylate superplasticizers and launching various items and products. However, smaller companies are also gaining entry into the market, and competition is growing increasingly fierce. In today's competitive market, businesses must continue to increase their service and product quality levels and cut production costs to gain market share.

5. Trends

Shortly, due to the constant growth within the industry of building the market for superplasticizers made from polycarboxylate will be able to present these trends.

High performance In developing engineering requirements, the performance of polycarboxylate superplasticizers has to be continually improved to meet the needs of high-performance concrete.

Protection of the environment: As environmental protection requirements and energy efficiency are becoming increasingly demanding, polycarboxylate superplasticizers must be more eco-friendly and energy-efficient.

Customization Diverse concrete fields and industries require different kinds of superplasticizers made of polycarboxylate to ensure that consumers will accept personalized polycarboxylate products.

Intelligent: With the advancement of technologies for information and intelligence, the next polycarboxylate superplasticizer will be more sophisticated and capable of achieving automatic production and intelligent use.

In the end, the potential for market share growth for superplasticizers made of polycarboxylate is huge. However, it is necessary for businesses to constantly improve the quality of their services and products to satisfy the changing demands of the market and to adapt to changes. In the meantime, continuous technological research, as well as innovation and advancement, are vital to meet the market's needs and predict future growth trends.

Why does properly poured concrete end up cracking

It is very easy to cause concrete cracking if the construction or maintenance are not done correctly. What are then the five main causes of cracking concrete?

1. The cement proportion problem: Some workers in construction will add more water for a more fluid concrete. However, this will result in an increase in water-cement ratio. This will cause the concrete to harden too quickly, and lead to cracking.

2. Transport and mixing issues: If mixing and transporting concrete takes too much time, the water in the concrete will evaporate quickly. concrete . This leads to a concrete that is weaker on the construction site, unable to meet construction specifications.

3. Construction speed

4. Maintenance is unreasonable. During the period of maintenance, if late watering isn't maintained, the result will be the Cracking phenomenon Later in the year, concrete will be used. Concrete is used in the future. Concrete Surface Watering You can water the concrete often to speed up the drying process. Concrete will shrink if it is not watered. Late cracking occurs when concrete strength is decreased.

5. Environmental factors: If the environment at the construction site is relatively dry and there is high temperature, wind, or both, then the evaporation of the concrete surface will be accelerated. The result is cracking on the concrete's surface. Concrete constructions are most likely to crack in the winter or summer because of the temperature differences.

Solution: Add an agent to prevent cracking. A variety of inorganic composite materials can prevent over 80% of the foam cement from cracking. Add 2-3 kilograms of anti-cracking material per cubic meter.

What is Molybdenum disulfide MoS2 powder

Description of Molybdenum diulfide

Molybdenum disulfide (also known as MoS2) is a transition metal sulfide. It is dark grey, or black solid. The layers of the crystal structure are made up of alternate arrangements of molybdenum-sulfur atoms. Molybdenum disulfide This material is chemically and thermally stable. It can be easily reacted to acids or bases. It is widely used in lubricants as well as additives and composites. As an excellent oil, molybdenum diulfide offers a high load bearing capacity, low friction coefficient and good friction resistance. This is why it's widely used by the machinery, petrochemicals and automobile industries. In extreme environments such as high temperature, high loads and fast speeds, molybdenum diulfide plays a lubricating and wear-reducing role. This can extend the service life for equipment. Molybdenum diulfide, when used as a fuel additive, can increase the efficiency of combustion and reduce pollutants. This additive plays a major role in protecting the environment, as it reduces air pollutants and improves energy efficiency.

Use of Molybdenum diulfide

Molybdenum diulfide is a compound that has outstanding chemical and physical properties. It is widely used in many fields. It has excellent chemical and mechanical properties. Following are some of the most important applications for molybdenum sulfide.

Lubricants - Molybdenum Disulfide, a lubricant that is excellent for its high load carrying capacity, low friction coefficient, and high friction resistance. It has a high lubrication capacity in high-temperature, high-load and high-speed environments. This is why it's widely used in the machinery industry, petrochemicals and automobile manufacturing. The molybdenum-disulfide lubricant is also used to produce lubricating grease, lubricating oil and lubricating film.

Additive - Molybdenum Disulfide, when used as a fuel additive, can increase the efficiency of combustion and reduce emissions. This additive plays a major role in protecting the environment by reducing air pollution and improving energy efficiency. As an additive, molybdenum can be added to rubber, plastics or coatings in order to improve their properties.

Composite materials. Molybdenum disulfide, when combined with rubber, resins and other materials, can produce high-performance materials such as reinforced fibres or composite plastics. These composites offer excellent mechanical properties, corrosion resistance and can be used in many industries including automotive, electronics and aerospace.

Electronic Industry Molybdenum disulfide It can be used for the electronic vapour deposition of thin MoS2 films. These thin films have excellent electrical conductivity, and transmit light well. This thin film material is suitable for optoelectronics applications, including solar cells and displays. The molybdenum-disulfide material can also be used to create transistors, Field-Effect Transistors and other electronic components. These electronic components have excellent semiconductor performance and good electronic mobility.

Production Methods of Molybdenum Diulfide

Molybdenum diulfide, a compound with excellent chemical and physical properties, is used in numerous fields. The production process can be done in many ways, including double decompositions, flotation, and electroplating. Synthesis is the most commonly used method for producing molybdenum.

The synthesis is a way to make nano MoS2 using a molybdenum, tungsten source. This method produces sulfides of high purity with fewer impurities. This method can produce sulfides to meet a variety of functional requirements. The steps in the synthesis include preparation of raw materials, chemical reactions, product separation, and purification.

It is essential to prepare both a tungsten source or molybdenum and a sulfur supply during the raw material preparation phase. Tungsten, molybdenum or metal powders are the most common sources. While sulfur can be either elemental sulfur or sulfide. The purity, chemical properties and reactions conditions of the raw materials are important factors to consider when selecting tungsten and molybdenum or sulfur sources.

In the chemical reactions stage, tungsten is Molybdenum Sources The molybdenum is disulfide produced in biochemical reactions that occur at high temperatures. The reaction temperature, the reaction time, and the reaction atmosphere are all part of the specific conditions. The temperature and reaction time of the reaction have an important effect on particle size and product purity. Reaction atmosphere has a similar impact.

Using appropriate purification and separation methods, molybdenum must be removed from reaction products during the separation stage. Precipitation, filtration and distillation are some of the most common separation and purification processes. These methods can be used to separate the molybdenum diulfide from impurities and obtain molybdenum products with high purity.

Other methods are available to produce molybdenum sulfide. These include the double decomposition technique, the flotation method, and the electroplating method.

The reaction between ammonium motdate or tungate and ammonium oxide produces molybdenum. The method is able to produce molybdenum sulfide even at lower temperatures. It can also prepare different molybdenum sulfide products, such as those with different particle sizes and morphologies.

Flotation is the process of extracting molybdenum diulfide by using organic agents and grinding tungsten, molybdenum or other sources with minerals like pyrite or Sphalerite. This method is able to produce molybdenum products with high purity, but requires more organic chemicals and a more complicated production process.

Electroplating is the process of electroplating molybdenum on a metallic substrate. By using this method you can create molybdenum-disulfide films that have excellent properties. However, the chemicals and waste liquids in the electroplating will pollute the surrounding environment.

It is important to select the best production method for the job based on the demand. It is also important to consider environmental protection and safety during the production process.

Prospect Market of Molybdenum Diulfide

Molybdenum diulfide is an important chemical compound that has excellent chemical and physico-chemical properties. It's widely used in machinery, electronics industry, aerospace, among other areas. Demand for molybdenum diulfide has increased due to the continued development of global economies and the rapid development in high-tech areas. Molybdenum Disulfide Market has a wide range of prospects for the future.

Molybdenum Disulfide, as a highly-performance lubricant used in petrochemical, machinery manufacturing and automobile manufacturing is very popular. As industrialization continues and mechanical equipment becomes more precise and automated, the demand for lubricants will increase. Molybdenum diulfide has a high performance and is in great demand.

In the second place, molybdenum dioxide can be added to fuels as an additive that will improve combustion efficiency, reduce pollution, reduce air pollutants and increase energy efficiency. As environmental awareness continues to grow and environmental policies are strengthened, the use of molybdenum dioxide as an additive that is environmentally friendly will continue to be promoted.

In composite materials, molybdenum diulfide, resins, rubbers and other materials can be combined to produce high-performance materials such as reinforced fibres, composite plastics etc. These composites have excellent mechanical and corrosion-resistant properties and are used in many fields, including automotive, electronics, aerospace and others. High-performance materials are in high demand due to the rapid growth and development of the high-tech industry. Molybdenum is one component and will see a rise in its demand.

The molybdenum-disulfide compound can be used to create new energy sources, including solar cells, energy storage batteries, and other energy technologies. As new energy technologies continue to be developed, demand for molybdenum will increase. This will provide new momentum for the development of the market.

In addition, as the production costs are reduced and the process is continuously improved, the price for molybdenum will continue to fall, which will encourage further market growth. In parallel, as environmental awareness increases and technological progress continues, some new production technologies and processes will gradually be implemented to produce molybdenum. This will promote further growth in the molybdenum market.

According to the report from the market research company the global molybdenum market will continue rapid growth for the next several years with a growth rate exceeding 10% per year. Globally, it is estimated that the molybdenum-disulfide industry will surpass $1 billion in 2025. China is a big producer and user of molybdenum, so the market will continue to grow rapidly.

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What is Boron carbide

Boron carburide is a high-performance carbon compound, which is composed primarily of boron, carbon, and other elements. The chemical formula for B4C is B4C. It has high heat transfer properties, a high melting point and high hardness. It's widely used by industries, the military and aerospace. The article will give a detailed description of the physical properties and chemical composition, preparation techniques, performance characterization and application fields.

Physical Properties

Boron carbide, a non-metallic inorganic material, has a mass density of 2.52g/cm3. It has a cubic lattice structure, a dense black crystal and a 0.243nm lattice constant. Boron carbide exhibits a low electrical conductivity of only 10-6S/m, and has excellent insulation. Its thermal resistance is 97W/m*K. This is lower than that of metals, silicon and ceramics but higher than glass and other materials.

Chemical properties

Boron carbide exhibits chemical stability, and it is not reactive to acids or alkalis. B4C is reactive with O2, H2O and other substances. High temperatures can generate B2O3, CO etc. B4C has anti-oxidant and corrosion resistance. This makes it suitable for use over a long period of time in environments with high temperatures and corrosive elements.

Preparation method

Preparation methods for boron carbide The main methods are the carbon thermal decomposition method, arc melting and chemical vapour deposit method.

Methode de réduction du carbothermal

Carbon thermal reduction (CTR) is widely used to prepare boron carbide . This method generates carbon dioxide and boron carburide by melting boric black and carbon. The reaction formula is B2O3+3C + B4C+CO. The reaction temperature ranges from 1500 to 1700°C. This method has the advantage of being simple, low-cost, and easy to use. However, the boron carbide produced is not of high purity.

Arc melting method

In the arc melting process, graphite electrodes are heated and melted in a reaction between boric acid or borax to create boron carbide. The reaction formula is B2O3+3C + B4C. The reaction temperature ranges between 18002000 degrees. This method yields boron-carbide with fine particles and high purity, but is costly and complex.

Chemical vapour deposition method

Chemical vapour deposition uses the reaction of gaseous carbon black and borane at high temperature to create boron carburide. The reaction formula is B2H6+6C B4C+6H2. The reaction temperature ranges between 1000-1200°C. The boron-carbide prepared using this method is high in purity, with superfine particles. However, the process is complicated and expensive.

Performance Characterization

The performance characterisation of boron carbide The term mainly refers to physical, chemical, or mechanical properties.

Physical Property

Density, conductivity, thermal resistance, etc. are the main physical properties of Boron carbide. The density is 2.52g/cm3, conductivity 10-6S/m, and thermal conductivity 97W/m*K.

Chemical Property

Boron carbide exhibits chemical stability, and it is not reactive to acids and alkalis. B4C is reactive with H2O and O2. High temperatures can generate B2O3, CO etc. B4C has anti-oxidant and corrosion resistance. This makes it suitable for long term use in high-temperature, corrosive environments.

Mechanical property

Boron carbide's high hardness, melting temperature, and heat transfer make it a popular material in many industries. Hardness of 3500kg/mm2, melting point 2450, and heat transfer rate 135W/m*K are among the characteristics that make boron carbide so popular in industries, military, aerospace, and other fields.

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