The effects of boron additives on the oxidation behavior of carbons

Impregnation of graphite with aqueous solutions of boric oxide or with organo-borates has been found to result in marked reduction in the rate of oxidation of the graphite in dry or moist air between 600 and 1000°C. At these temperatures, the additives probably form a glassy oxide residue which blocks active sites on the graphite surface.