The crystals of titanium diboride produced by Jingyi are amber crystals, which are gray-black after grinding into powder and have a hexagonal crystal structure. The high crystallinity product made by high temperature reaction of 2000OC, its single crystal particles can reach 1 mm. Its melting point is 2980OC, and it has high hardness. The anti-oxidation temperature of titanium diboride in the air can reach 1000 OC, and it is stable in HCl and HF acid. Titanium diboride is mainly used to prepare composite ceramic products. Because of its resistance to molten metal corrosion and its own high hardness, it can be used in the manufacture of molten metal crucibles, evaporation boats, electrolytic aluminum cathode plates, ceramic cutting tools and molds, and composite ceramic engine parts.