Why does chromium carbide have hardness

What is chromium carbide?

Chromium carbide ( Cr3C2) is gray powder with metallic gloss; Orthorhombic system; The density is 6.68 g/cm3; The melting factor is 1890 ℃ and also the boiling point is 3800 ℃. It has excellent wear resistance, deterioration resistance and also oxidation resistance at heat (1000 ~ 1100 ℃). Belonging to a cermet.

Especially chromium carbide has numerous superb residential or commercial properties, such as solid chemical stability, high hardness at space temperature level and also thermal solidity, excellent resistance to acid and alkali rust, great wear resistance, high melting point, as well as great wettability with steels such as and. In the steel carbide, the oxidation resistance of zui is high, and also the oxidation temperature level is as high as. When chromium is used as an inhibitor, the grain growth of concrete carbide can be successfully regulated. Additionally, chromium carbide is not just an additive of eruptive bonding product with good wear resistance and a top quality cermet resources. It can additionally be utilized as splashing powder. As an example, splashing powder has good corrosion, oxidation, as well as put on resistance at high temperature levels. Due to its excellent attributes, chromium carbide has been extensively utilized in the metallurgical sector, electronic market, high-temperature immune coating, aerospace, and various other areas.

Chromium carbide has high solidity, high melting factor, high flexible modulus, chemical rust resistance, and also wear resistance and has actually turned into one of the widely used metal carbides. In reducing devices, chromium carbide powder normally plays a vital function as a surface area coating. In Fe-Cr-C alloy, chromium carbide is an essential rainfall phase, offering the material excellent wear resistance. Chromium is an important wear-resistant stage, while firmness, as a substantial mechanical criterion in the layout of wear-resistant materials, has yet to obtain a relatively precise outcome.

Chromium carbide (CnC) has a low solidity of 1710 as well as a density of 6.68 g. m), a thermal expansion coefficient of 10.3 x 10 ~ K (20-100) as well as a thermal conductivity of 19.1 W.m-+. K-1. Its primary characteristics are that the carbide has a high area temperature level, thermal firmness, and good wettability with steels such as CoNi. It is used in steel mold compounds.

Making chromium carbide by a combination of aluminothermic reduction and also vacuum cleaner furnacing at temperatures of 1500°& deg; C and over. A mix of chromium metal, chromium oxide and also carbon is ready and also then packed right into a vacuum cleaner heating system. The stress in the furnace is lowered as well as the temperature enhanced to 1500°& deg; C. The carbon responds with the chromium oxide to create chromium metal and also carbon monoxide, which is drained right into the vacuum cleaner pumps. The chromium steel then combines with the remaining carbon to create the chromium carbide

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