How to produce vanadium carbide VC powder?

Overview of vanadium carbide VC powder

Vanadium carbide is an inorganic compound with the molecular formula VC. Black cubic crystal, melting point 2810°C, boiling point 3900°C, relative density 5.77, Moher hardness 9-9.5, slightly higher than quartz, and may be the hardest metal carbide known. Vanadium carbides are commonly found in vanadium metals and alloys. Vanadium carbide can be prepared by reducing vanadium pentoxide with coke. Mainly used in the manufacture of vanadium steel. Can be used as cemented carbide additives for cemented carbide.

It has the same structure as vanadium monoxide and crystallizes in the rock salt structure. Because VC and VO are mutually soluble, VC samples usually contain oxide impurities. It is made by heating vanadium oxide and carbon at a temperature of about 1000°C. Although VC is thermodynamically stable, it will be converted to V2C at higher temperatures.

Vanadium carbide, chemical formula VC, molecular weight 62.95, carbon content 19.08%, density 5.41g/cm3, melting point 2800℃, boiling point 3900℃. Vanadium carbide is a gray metal powder with a NaCl type cubic structure and a crystallization constant of 4.182. Cemented carbide has stable chemical properties and excellent high temperature performance. It can be used in the tool and steel industry, and can also be used as an additive to refine WC cemented carbide to improve alloy properties.

How to produce vanadium carbide VC powder?

1. Complete the preparation of carbon powder and vanadium dioxide under high vacuum conditions, and prepare vanadium carbide at a temperature above 1300°C. 2. Pure VC can be prepared by gas phase reaction method. Connect carbon tetrachloride VCl4 vapor and hydrocarbon gases (methane, benzene, etc.) to the tungsten wire, and directly heat it to prevent the production of vanadium and tungsten wire. In the initial stage of the reaction, the temperature of the tungsten wire is kept below 1400°C to form After the strong VC layer, the temperature is raised to 2000°C to complete the carbonization reaction. The precipitated tungsten filaments are off-white crystals.

3. Made of metallic vanadium. Combine metal vanadium powder or vanadium hydride powder (particle size less than 325 mesh, preferably less than 1 micron) and carbon black (mixed in the mine, the carbon black content is greater than 5% to 10%. The metal is under high pressure (about 3 tons/cm 2) When mixing down, vanadium (about 1 ton/cm 2) is suppressed when pressurized. Store this pressurized powder in a graphite crucible heated to 1800-2000°C (vacuum degree of about 1-33322Pa), and hold for 1h. The degree of carburization (reaction temperature and holding time) depends on the particle size of the powder, raw materials, reaction performance, filling amount, etc.).

4. Using the reduction method, the carbon powder and vanadium dioxide are fully mixed, and vanadium carbide is prepared under high vacuum conditions above 1300°C.

Application of vanadium carbide VC powder

The application range of vanadium carbide is very wide. Among them, adding vanadium carbide to steel can improve the comprehensive wear resistance, corrosion resistance, toughness, strength, ductility, hardness and thermal fatigue resistance of steel, and can be used as a wear-resistant material. Suitable for different cutting and worn materials. Resistant to tools.

Vanadium carbide is widely used as a new type of catalyst due to its high activity, selectivity, stability and resistance to "catalyst poisoning" in hydrocarbon reactions.

Vanadium carbide can also be used as a new carbon source for synthetic diamond. Vanadium carbide is used as a grain inhibitor in the fields of cemented carbide and cermets, and can effectively prevent the growth of WC grains during the sintering process.

Vanadium carbide is used as an additive to cemented carbide to refine carbide crystals, thereby increasing the hardness of the blade.

Vanadium carbide can be used as a grain refiner in cemented carbide, cutting tools and steelmaking industries, which can significantly improve alloy properties.

Vanadium carbide is used to cut hard alloys to produce wear-resistant films and semiconductor films.

Price of vanadium carbide VC powder

The price of vanadium carbide VC powder will vary randomly with factors such as the production cost, transportation cost, international situation, market supply and demand of vanadium carbide VC 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 set of customized services. If you are looking for vanadium carbide VC powder, please feel free to send an inquiry to get the latest price of vanadium carbide VC powder.

Vanadium carbide VC powder suppliers

As a global vanadium carbide VC powder supplier, Tanki New Materials Co., 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 chromium carbide, aluminum carbide), titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.