What are the properties and application characteristics of titanium carbide

       Titanium carbide (TiC) is a compound of carbon and titanium, of which Ti79.98% (mass), C20.05% (mass). The melting point is 3067 degrees Celsius and the density is 4.93g.cm-3. Among the carbides of transition metals, titanium carbide has the highest normal temperature hardness (HV) of 3000, so it is the most wear-resistant material used at room temperature. However, as the use temperature increases, the hardness of titanium carbide decreases sharply. When it exceeds 500 degrees, its hot hardness is the lowest among all carbides except ZrC and ThC, so titanium carbide is not used as a wear-resistant material for high temperature use.

    The wettability of titanium carbide and Co, Ni, Fe and other metal melts is not good, and the solubility in these metal solutions is also small, so it is difficult to obtain a wear-resistant coating with TiC dispersed in the Co, Ni, Fe metal matrix phase . However, titanium carbide can be combined with the iron alloy components of steel-bonded cemented carbide to make steel-bonded cemented carbide with important uses. Abrasive parts.

    TiC can form composite carbides (WtiC2) with WC, which has the comprehensive properties of TiC and WC. WTiC2 can also be coated with Ni to make a coated composite powder for spraying. The TiC and TiN mixed powder spray coating has a distinctive characteristic color and can be used as a wear-resistant and scratch-resistant hard decorative coating.

    It is used as the main raw material for the production of steel-bonded cemented carbide. It can form composite carbides with other carbides, and can be made into coated composite powders or mixed powders to be used as raw material powders for thermal spraying.