Microscale abrasion-corrosion behaviour of WC-Co hardmetals and HVOF sprayed coatings

Generally, it has been observed that microscale abrasion of both the sintered and coating materials occurs predominantly by preferential removal of the binder phase followed by pullout of the carbide. Binder phase removal is accelerated by corrosion in acid media. The wear behaviour of the various materials examined was related to the microstructure and the conditions of the abrasive wear test.