Preparation and application of Titanium carbide based cermet

Titanium carbide TiC ceramics belong to the face centered cubic crystal type, with high melting point, good thermal conductivity, high hardness, good chemical stability, non hydrolysis, good high-temperature oxidation resistance, no reaction with acid at room temperature, but can be dissolved in the mixed acid of nitric acid and hydrofluoric acid, and form nitride at 1000 ℃ in nitrogen atmosphere.

Titanium carbide powder is generally prepared by reacting TiO2 and carbon black in a carbon tube furnace or a frequency modulated vacuum furnace with hydrogen flowing at 1600 ℃ -1800 ℃. The conventional ceramic molding method can be used for molding, and the hot pressing method can also be used for firing. The advantages of this method are energy saving, simple process, and high product purity.

With high hardness, Titanium carbide ceramic is an important raw material for the production of cemented carbide, and has good mechanical properties. It can be used to manufacture wear-resistant materials, cutting tool materials, Machine element, etc., and can also be used to make crucibles for smelting tin, lead, cadmium, zinc and other metals. In addition, transparent Titanium carbide ceramics are good optical materials.