High Temperature Oxidation of WC-CrN Superhard Nanocomposite Film

摘要

The high-temperature oxidation resistance of the WC-CrN superhard nanocomposite films was studied at 600 and 700°C in air. The oxidation of the film resulted in the formation of volatile species such as the evolution of carbon probably as CO or CO_2, evolution of nitrogen from the film, and the formation of W-oxides. The scale formed was prone to cracking and spallation.