CORROSION RESISTANCE OF TUNGSTEN CARBIDE BASE HARD METAL

Among the corrosion resistant hard metals an investigation for the corrosion resistance of the WC base metal is of particular importance, since this metal is more universal in use. In this article, the corrosion resistance of the WC base hard metal to acid and alkali and its relations to the contents and compositions of the bonding phase, as well to as the graphite and η₁ phase in the metal are discribed and on this basis the activated sintering of the hard metals of low bonding phase contents is discussed.