Dry Sliding and Abrasive Wear Behavior of Nanostructure Zr-W-N Coating

摘要

Zirconium tungsten nitride (Zr-W-N) coating has been deposited on 304 SS substrates by pulse DC magnetron sputtering. The average micro hardness and roughness of Zr-W-N coating were obtained as similar to 1,963 HV and similar to 13 nm respectively. The dry sliding and abrasive wear tests of coated samples were performed in open atmosphere at various loads (15-45 N) with constant speed (0.1 m/s) up to maximum life of a coating. The coefficient of friction (COF) and cumulative weight loss were measured as a function of distance travelled by the coating. The change (minimum to maximum) in COF of the coated samples at various loads was obtained as similar to 0.15-0.68 and similar to 0.20-0.27 for dry sliding wear and abrasive wear tests respectively. The cumulative weight loss of the coated samples at various loads was calculated as 1 x 10(-6)-6 x 10(-6) g/m for dry sliding wear and 6 x 10(-6)-26 x 10(-6) g/m for abrasive wear test. Finally, coatings were compared on COF and cumulative weight loss as a function of sliding distance with SS substrate at 15 N load with 0.1 m/s speed.