CERMET AND COATED CERMET

摘要

The present invention is to provide a cermet which comprising a hard phase which contains W and nitrogen, and comprises at least one selected from a carbide, nitride and carbonitride of a metal comprising Ti as a main component, and a binder phase comprising an iron group metal as a main component, wherein a W amount contained in the whole cermet is 5 to 40% by weight, an interfacial phase comprising a complex carbonitride with a larger W amount than a W amount of the hard phase being present between the hard phase and the hard phase, and when a W amount contained in the interfacial phase based on the whole metal element is represented by Wb (atomic %), and a W amount contained in the hard phase based on the whole metal element is represented by Wh (atomic %), then, an atomic ratio of Wb to Wh (Wb/Wh) being 1.7 or more, which is excellent in fracture resistance and wear resistance.