Why does chromium carbide have hardness

What is chromium carbide?

Chromium carbide ( Cr3C2) is gray powder with metallic gloss; Orthorhombic system; The thickness is 6.68 g/cm3; The melting point is 1890 ℃ and also the boiling factor is 3800 ℃. It has great wear resistance, corrosion resistance and oxidation resistance at high temperature level (1000 ~ 1100 ℃). Coming from a cermet.

Especially chromium carbide has lots of superb residential or commercial properties, such as solid chemical security, high firmness at area temperature and thermal firmness, excellent resistance to acid and also alkali deterioration, excellent wear resistance, high melting point, as well as good wettability with metals such as and also. In the metal carbide, the oxidation resistance of zui is high, and the oxidation temperature level is as high as. When chromium is utilized as an inhibitor, the grain development of concrete carbide can be effectively managed. Additionally, chromium carbide is not just an additive of eruptive bonding product with great wear resistance and a high-grade cermet basic material. It can additionally be used as spraying powder. As an example, splashing powder has good corrosion, oxidation, and also wear resistance at high temperatures. Due to its excellent attributes, chromium carbide has been extensively made use of in the metallurgical industry, digital market, high-temperature immune layer, aerospace, and also other areas.

Chromium carbide has high solidity, high melting factor, high elastic modulus, chemical rust resistance, and use resistance and has actually ended up being one of the extensively made use of steel carbides. In cutting devices, chromium carbide powder normally plays a vital role as a surface area finishing. In Fe-Cr-C alloy, chromium carbide is a crucial rainfall phase, offering the material superb wear resistance. Chromium is an essential wear-resistant phase, while solidity, as a substantial mechanical criterion in the layout of wear-resistant products, has yet to obtain a relatively precise result.

Chromium carbide (CnC) has a reduced hardness of 1710 and also a thickness 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 room temperature level, thermal solidity, as well as good wettability with steels such as CoNi. It is made use of in steel mold substances.

Producing chromium carbide by a combination of aluminothermic decrease as well as vacuum furnacing at temperatures of 1500°& deg; C as well as over. A mix of chromium steel, chromium oxide and also carbon is prepared and then filled into a vacuum cleaner heater. The stress in the furnace is lowered and also the temperature increased to 1500°& deg; C. The carbon responds with the chromium oxide to create chromium metal and also carbon monoxide gas, which is drawn off right into the vacuum pumps. The chromium steel then combines with the continuing to be carbon to develop the chromium carbide

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