Why does chromium carbide have hardness

What is chromium carbide?

Chromium carbide ( Cr3C2) is grey powder with metallic appeal; 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, deterioration resistance as well as oxidation resistance at high temperature (1000 ~ 1100 ℃). Coming from a cermet.

Especially chromium carbide has many excellent properties, such as solid chemical stability, high hardness at space temperature level and also thermal hardness, excellent resistance to acid and also alkali deterioration, excellent wear resistance, high melting point, as well as excellent wettability with metals 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 utilized as a prevention, the grain growth of concrete carbide can be efficiently controlled. Furthermore, chromium carbide is not only an additive of eruptive bonding material with great wear resistance and a top quality cermet basic material. It can also be utilized as spraying powder. For instance, spraying powder has good corrosion, oxidation, and put on resistance at high temperature levels. As a result of its excellent attributes, chromium carbide has been widely used in the metallurgical sector, digital industry, high-temperature resistant finishing, aerospace, and various other areas.

Chromium carbide has high solidity, high melting point, high elastic modulus, chemical corrosion resistance, and put on resistance and has come to be one of the commonly utilized metal carbides. In cutting devices, chromium carbide powder typically plays a vital duty as a surface area coating. In Fe-Cr-C alloy, chromium carbide is an important precipitation stage, offering the product superb wear resistance. Chromium is a crucial wear-resistant phase, while firmness, as a considerable mechanical criterion in the design of wear-resistant materials, has yet to obtain a relatively accurate outcome.

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

Making chromium carbide by a mix of aluminothermic reduction as well as vacuum cleaner furnacing at temperatures of 1500°& deg; C and over. A mix of chromium metal, chromium oxide and carbon is ready and after that loaded right into a vacuum furnace. The stress in the heater is minimized and also the temperature raised to 1500°& deg; C. The carbon responds with the chromium oxide to form chromium steel as well as carbon monoxide gas, which is drawn off right into the vacuum pumps. The chromium metal then combines with the continuing to be carbon to develop the chromium carbide

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