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Boron carbide (B₄C) is a premium ultra-hard ceramic material with Mohs hardness of 9.3–9.6, only inferior to diamond and cubic boron nitride. It features low density, excellent wear resistance, stable chemical inertness, high melting point and outstanding neutron absorption capacity. Thanks to this unique combination of physical and chemical characteristics, boron carbide powder and sintered

Boron carbide, chemically marked as B₄C and nicknamed “black diamond”, is an ultra-hard covalent ceramic material formed by boron and carbon atoms with a unique rhombohedral crystal structure. Discovered in the 19th century and mass-produced via carbothermal reduction in electric arc furnaces, it appears as black crystalline powder with subtle metallic luster, standing as the