Refractory Composite

Oxide material
For example, the melting point of alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconia, uranium oxide, magnesium oxide, cerium oxide and thorium oxide is between 2050 and 3050 ℃.
Refractory compound material
Such as carbides (silicon carbide, titanium carbide, tantalum carbide, etc.), nitrides (boron nitride, silicon nitride, etc.), borides (zirconium borate, titanium borate, hafnium borate, etc.), silicides (molybdenum disilicide, etc.) and sulfides (thorium sulfide, cerium sulfide, etc.). Their melting point is 2000~3887 ℃, and the most refractory is carbide.
High-temperature composite
Such as cermets, high-temperature inorganic coatings and fiber reinforced ceramics.