Wear resistant coating, especially for steel tools or punches, comprising chromium nitride in combination with niobium nitride or tantalum nitride

摘要

A wear resistant coating comprising chromium nitride in combination with niobium nitride or tantalum nitride is new. Independent claims are also included for the following: (i) a tool having the above coating; and (ii) a punch, especially a pressing punch, having the above coating. Preferred Features: The coating comprises alternate layers of chromium nitride and of niobium nitride or tantalum nitride and is applied by arc deposition.