Why does chromium carbide have hardness

What is chromium carbide?

Chromium carbide ( Cr3C2) is grey powder with metal radiance; Orthorhombic system; The density is 6.68 g/cm3; The melting factor is 1890 ℃ as well as the boiling factor is 3800 ℃. It has excellent wear resistance, corrosion resistance as well as oxidation resistance at heat (1000 ~ 1100 ℃). Coming from a cermet.

Specifically chromium carbide has lots of excellent properties, such as solid chemical stability, high solidity at space temperature as well as thermal firmness, great resistance to acid and also alkali rust, good wear resistance, high melting point, as well as good wettability with steels such as and. In the steel carbide, the oxidation resistance of zui is high, and also the oxidation temperature is as high as. When chromium is made use of as a prevention, the grain development of concrete carbide can be properly controlled. Furthermore, chromium carbide is not only an additive of eruptive bonding product with great wear resistance and also a high-grade cermet raw product. It can additionally be used as spraying powder. As an example, spraying powder has excellent corrosion, oxidation, and put on resistance at high temperatures. Because of its exceptional characteristics, chromium carbide has been commonly made use of in the metallurgical sector, electronic market, high-temperature resistant layer, aerospace, as well as other fields.

Chromium carbide has high solidity, high melting factor, high elastic modulus, chemical rust resistance, and also wear resistance and has turned into one of the extensively made use of steel carbides. In reducing devices, chromium carbide powder generally plays an important function as a surface area coating. In Fe-Cr-C alloy, chromium carbide is a crucial rainfall phase, providing the material superb wear resistance. Chromium is an essential wear-resistant stage, while solidity, as a substantial mechanical criterion in the style of wear-resistant products, has yet to obtain a fairly precise outcome.

Chromium carbide (CnC) has a reduced hardness of 1710 as well as a thickness of 6.68 g. m), a thermal development coefficient of 10.3 x 10 ~ K (20-100) and also a thermal conductivity of 19.1 W.m-+. K-1. Its main qualities are that the carbide has a high area temperature level, thermal hardness, as well as great wettability with steels such as CoNi. It is utilized in metal mold compounds.

Producing chromium carbide by a combination of aluminothermic reduction as well as vacuum furnacing at temperatures of 1500°& deg; C and also over. A mix of chromium metal, chromium oxide and carbon is ready as well as then filled into a vacuum cleaner furnace. The pressure in the furnace is decreased and also the temperature boosted to 1500°& deg; C. The carbon responds with the chromium oxide to develop chromium steel and carbon monoxide gas, which is drained into the vacuum pumps. The chromium metal then combines with the continuing to be carbon to develop the chromium carbide

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