Acoustic Microscopic Observation of the Vickers Indentations on Cemented Carbides Coated with TiC Films by PVD and CVD Processes

In order to investigate the differences in the properties of the coated cemented tungsten carbides, WC/Co, by the PVD and CVD processes indentations impressed by the Vickers hardness tester on WC/Co coated with TiC films were observed with an acoustic microscope. The difference in debonding of the coated surface films from substrate materials andcracks originating from the Vickers indentations could be analyzed by acoustic microscopy