Titanium carbide, TiC, is an extremely hard refractory ceramic material, similar to tungsten carbide. It has the appearance of black powder with the sodium chloride (face-centered cubic) crystal structure. As found in nature its crystals range in size from 0.1 to 0.3mm.
Molar mass：59.89 g/mol
Melting point：3,160 °C (5,720 °F; 3,430 K)
Boiling point：4,820 °C (8,710 °F; 5,090 K)
Solubility in water：insoluble
Magnetic susceptibility (χ)：+8.0·10−6 cm3/mol
Crystal structure：Cubic, cF8
Titanium carbide is used in preparation of cermets, which are frequently used to machine steel materials at high cutting speed. It is also used as an abrasion-resistant surface coating on metal parts, such as tool bits and watch mechanisms. Titanium carbide is also used as a heat shield coating for atmospheric reentry of spacecraft.
7075 aluminium alloy (AA7075) is almost as strong as steel, but weighs one third as much. Using thin AA7075 rods with TiC nanoparticles allows larger alloys pieces to be welded without phase-segregation induced cracks.