Titanium nitride, the chemical formula is TiN, is a golden cubic crystal. The molecular weight is 61.89. The melting point is 2950℃. The density is 5.43g/cm3.

Silicon nitride is a kind of inorganic substance, the chemical formula is Si3N4. The relative molecular mass is 140.28. Gray, white or off-white.

Aluminum nitride is a covalent bond compound. The chemical formula is AIN. It is an atomic crystal, belongs to the diamond-like nitride, hexagonal crystal system, has a wurtzite type crystal structure, non-toxic, white or off-white.

The molecular formula of molybdenum carbide is Mo2C, the molecular weight is 203.88, and the carbon content is 5.89%. It is a dark gray metallic powder, which crystallizes into a dense hexagonal lattice.

Tantalum carbide or TaC is a light brown metallic cubic crystal powder, belonging to the sodium chloride cubic crystal system. The density is 14.3g/cm3.

Chromium carbide is an inorganic compound with the molecular formula Cr3C2 and the molecular weight is 180.01. It is gray powder with a rhombic system, A =2.821, B =5.52, C =11.46. The melting point is 1890℃ and the boiling point is 3800℃.

The chemical formula for titanium carbide is TiC. It is a steel-gray crystal with a metallic luster. It has thermal conductivity and electrical conductivity, and its electrical conductivity decreases with the increase of temperature, so it shows the prope

Spherical quartz powder, also known as spherical silicon powder, refers to the amorphous quartz powder material whose individual particles are spherical and the main component is silica.

Aluminum oxide or bauxite with the chemical formula Al2O3 is a refractory and insoluble white powder. The melting point is 2015℃, the boiling point is 2980℃, the relative density is 4.0, and the Mohs hardness is 8.8.

Manganese dioxide is also known as manganese peroxide or black manganese oxide. It is the oxide of tetravalent manganese. The chemical formula is MnO2. The fHm (298K) is -520.71kJ/mol, the melting point is 847℃, and the density is 5.026 g/cm3.