Cu2O or cuprous oxide is an oxide of univalent copper, usually in the form of brick red or reddish-brown crystals and powders.

Boron carbide (B4C) is also called black diamond. It is grayish black, and is a very hard man-made material.

Zirconia toughened alumina (ZTA) is made of zirconia and alumina.

Silicon nitride formula is Si3N4. Silicon nitride has two crystal forms: an and β. A-Si3N4 is granular crystal and p-Si3N4 is acicular crystal, both of which belong to hexagonal system.

Silicon carbide is a compound made of silicon and carbon.

Lithium stearate is the lithium salt of stearic acid. It comes from lithium hydroxide and cooking butter or other animal fats.

Boron can be prepared in several crystalline and amorphous forms.

Copper oxide is an inorganic substance. Copper oxide chemical formula is CuO.

Magnesium stearate appears in the list of ingredients in most supplements as an additive.

Tantalum disilicide chemical formula is TaSi2. It has excellent properties such as high melting point, low resistivity, corrosion resistance, high temperature oxidation resistance, and good compatibility with silicon, carbon and other matrix materials.