HARD FILM AND METHOD FOR FORMING SAME, AND DIE FOR USE IN HOT FORMING OF STEEL SHEET

摘要

Disclosed is a hard film based on tungsten carbide excellent in wear resistance, wherein the composition of the film is defined by W1-x-yCxMy, where 0.01≦y≦0.2, 0.50≦x/(1−x−y)≦4.0, and M is one or more selected from Co, Ni, Fe and Cu.