Chemical stability of boron carbide

Boron carbide is one of the most stable compounds, oxidation reaction under 600 c are less [41 and temperature above 600, because the surface oxidation into B2O3 film, to prevent further oxidation of B4C so now B4C was used as refractory materials of antioxidants. Room temperature B4C generally does not react with chemical reagents to 800 ℃ above B4C B4C and Br form three bromine compounds in high temperature reaction with metal oxide generated metal boride and carbon monoxide, the generated FeB film has the very high microhardness (HV = 24 gpa and resistance to wear. So the B4C can be used in steelAnd boronization of alloys.