Abstract
CrB2 powders were successfully synthesized by the borothermal reduction of Cr2O3 at 800–1000°C under ambient pressure without B in excess. The presence of molten NaCl/KCl salts not only greatly decreased the synthesis temperature without introducing any impurities but also induced a small particle size. The CrB2 powders synthesized at 900°C had the largest specific surface area of 11.09m2/g and the lowest equivalent average particle size of 104nm, respectively.
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