Aluminum oxide , as a new type of high-purity material, has an increasingly obvious role.

Titanium diboride is gray or gray-black with a hexagonal crystal structure. Its melting point is 2980℃ and it has a very high hardness. Titanium diboride is stable in HCI and HF acid, with antioxidant temperature up to 1000℃ in air.

Molybdenum silicide is a compound composed of two elements molybdenum and sulfur, chemical formula MoSi2. The compound, a transition metal silicide compound with a silvery black luster, is found in nature in the form of molybdenite.

Copper oxide (chemical formula: CuO) is an oxide of copper, which is a black solid. It's a strong electrolyte.

Colloidal silver is a kind of metallic silver with a particle size of nano-level, and its particle size is mostly around 25 nanometers.

Silicon nitride (Si3N4) is a compound composed of silicon and nitrogen elements. It is an important structural ceramic material.It is a super hard substance, lubricity in itself, and wear - resistant, for atomic crystals.

Nitinol powder is a type of material called shape memory alloy. The specific surface area (m2/g) of the nickel-titanium alloy powder is 12.3, its bulk density (g/cm3) is 0.15, and the powder color is black.

Manganese dioxide is a black or brown solid. It is the most stable oxide of manganese and often occurs in pyrolusite and manganese nodules.

Graphite is a allotrope of carbon, and the two are closely related. Graphite is the most stable form of carbon.

Zirconium nitride (ZrN) is an refractory compound, golden yellow, high decomposition temperature, good chemical stability, has a very good high temperature resistance, corrosion resistance, wear resistance, used in atomic energy industry reactor protectiv