Why does chromium carbide have hardness

What is chromium carbide?

Chromium carbide ( Cr3C2) is grey powder with metal gloss; Orthorhombic system; The density is 6.68 g/cm3; The melting factor is 1890 ℃ as well as the boiling point is 3800 ℃. It has good wear resistance, deterioration resistance as well as oxidation resistance at high temperature level (1000 ~ 1100 ℃). Coming from a cermet.

Especially chromium carbide has numerous superb properties, such as strong chemical security, high firmness at room temperature level and also thermal firmness, good resistance to acid as well as alkali rust, excellent wear resistance, high melting factor, and also excellent wettability with steels such as and. In the metal carbide, the oxidation resistance of zui is high, as well as the oxidation temperature level is as high as. When chromium is made use of as a prevention, the grain development of concrete carbide can be efficiently controlled. Moreover, chromium carbide is not only an additive of eruptive bonding material with great wear resistance and a high-grade cermet raw material. It can also be utilized as spraying powder. As an example, spraying powder has excellent corrosion, oxidation, as well as put on resistance at heats. As a result of its superb attributes, chromium carbide has actually been commonly utilized in the metallurgical industry, electronic market, high-temperature immune finish, aerospace, and also various other fields.

Chromium carbide has high firmness, high melting factor, high flexible modulus, chemical corrosion resistance, as well as use resistance as well as has ended up being one of the extensively made use of steel carbides. In reducing tools, chromium carbide powder normally plays a crucial function as a surface area layer. In Fe-Cr-C alloy, chromium carbide is a crucial rainfall stage, giving the material superb wear resistance. Chromium is a vital wear-resistant phase, while solidity, as a significant mechanical parameter in the layout of wear-resistant materials, has yet to get a relatively accurate result.

Chromium carbide (CnC) has a reduced solidity of 1710 as well as a density 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 features are that the carbide has a high room temperature level, thermal solidity, and also excellent wettability with metals such as CoNi. It is made use of in metal mold compounds.

Producing chromium carbide by a mix of aluminothermic reduction and vacuum furnacing at temperature levels of 1500°& deg; C and also over. A mix of chromium steel, chromium oxide and also carbon is ready and afterwards filled right into a vacuum cleaner heater. The stress in the heating system is minimized and also the temperature boosted to 1500°& deg; C. The carbon reacts with the chromium oxide to develop chromium steel and also carbon monoxide gas, which is drained into the air pump. The chromium metal then combines with the remaining carbon to form the chromium carbide

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