Chemical properties of Tungsten Carbide Powder
CAS No :12070-12-1
EINECS No. :235 -123-0
Tungsten carbide does not dissolve in water, hydrochloric acid and sulfuric acid, soluble in nitric acid - hydrofluoric acid mixture. Pure tungsten carbide is brittle, but if mixed with a small amount of titanium, cobalt and other metals, can reduce brittleness. Tungsten carbide is used as steel cutting tool, often adding titanium carbide, tantalum, or the mixtures of above to improve the antiknock capacity. Chemical stability of tungsten carbide.
In air began active oxidation when above 500 ℃, and antioxidant capacity is weak. Using tungsten anhydride (WO3) and graphite in a reducing atmosphere at 1400 ~ 1600 ℃ to produce tungsten carbide (WC) powder. Then by hot pressing or hot isostatic pressing and sintering can be obtained dense ceramics.