Abstract
Mechanical properties including cutting performance of nitrogen (N) contained titanium carbide based cermet affected by additional carbides, i.e., tungsten carbide, tantalum carbide or molybdenum carbide, were studied comparing with those of N-free cermet. It was found that the hardness of both cermets generally increased by adding the carbides. It was also found that the wear resistance of N-contaied cermet in turning tests, which was inferior to that of N-free cermet, was never improved. On the other hand, superior resistance to fracture of N-contained cermet in milling tests appeared not to be changed by the carbide addition.
