High Temperature Oxidation of WC-ZrN Superhard Nanocomposite Film
The high-temperature oxidation behavior of WC-ZrN superhard nanocomposite film was studied in air between 500 and 700oC. The WC-ZrN film displayed poor high-temperature oxidation resistance, because of the formation of the nonprotective W-oxide scale and the less-protective, nonstoichiometric ZrO2-x oxide scale. The scale was prone to cracking and spallation. During oxidation, C and N escaped from the film into the air, while oxygen from the air diffused into the film.
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
D. B. Lee and Y.A. Shapovalov, "High Temperature Oxidation of WC-ZrN Superhard Nanocomposite Film", Materials Science Forum, Vols. 510-511, pp. 414-417, 2006