Chromium carbide

Properties and characteristics: Cr3C2=180.02, carbon 13.34%, gray powder, rhombic crystal structure, insoluble in water, acid and alkali resistance. Density is 6.65-6.68 g/cm 3, melting point :1890 degrees, boiling point :3800 degrees. It is a high melting point inorganic material with good wear resistance, corrosion resistance and oxidation resistance in a high temperature environment (1000-1100 degrees), and is widely used as a thermal spraying material for metal surface protection, and is also commonly used as a grain refiner of tungsten carbide and other wear-resistant and corrosion-resistant components. Cr3c2-based cermet has excellent oxidation resistance at high temperatures, and the surface darkens only slightly after 5 hours of thermal exposure at 982 ° C. Under the same conditions, 18-8 stainless steel has been significantly destroyed, and WC-6Co alloy is completely oxidized

The products are used for special welding materials, cemented carbide, surface spraying
The production process consists of chromium and carbon carbonized in a vacuum. Its molecular formula is Cr7C3, its melting point is 1665 ° C (the theoretical weight of carbon is 10%), and its density is 6.9g/cm³. The melting point of Cr3C2 is 1890℃ (the theoretical weight of carbon is 13%), the density is 6.68g/cm³, the hardness is above HV2200, and the chromium carbide is non-toxic, non-corrosion, non-oxidation, tasteless. The appearance color of chromium carbide is silver gray. The lattice of chromium carbide is positive and negative, with a melting point of 1895 ° C and a boiling point of 3800 ° C. High wear resistance, corrosion resistance and high temperature resistance.

It is a high melting point material with good wear resistance, corrosion resistance and oxidation resistance in high temperature environment, carbide particles made of nickel-chromium alloy, using plasma spraying method, can be used as high temperature resistance, wear resistance, oxidation resistance and acid resistance coating, widely used in aircraft engines and petrochemical machinery devices, which can greatly improve the life of machinery. It is also commonly used as a grain refiner of cemented carbide and other wear-resistant and corrosion-resistant components. Cermet based on Cr3C2 has excellent oxidation resistance at high temperature.

Used in chromium carbide ceramics. Coarse-grained chromium carbide is used as melt-blown material to form melt-blown film on the surface of metal and ceramic, giving the latter wear resistance, heat resistance, corrosion resistance and other properties, and is widely used in aircraft engines and petrochemical machinery devices to greatly improve the mechanical life. It is also used to spray semiconductor films.