Tribological characterization of tungsten nitride coatings deposited by reactiv...

• Author(s): Polcar, T. ; Parreira, N. M. G. ; Cavaleiro, A.
• Date: 2007
• Persistent ID: http://hdl.handle.net/10316/4210
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Unlubricated friction; Friction mechanisms; Nitrides; Tungsten; Coatings; Wear-resistant
• Document Type: Article
• Language: English

Description

The structure, hardness, friction and wear of tungsten nitrides prepared by d.c. reactive magnetron sputtering were investigated. The coatings were deposited with different nitrogen to argon ratios; the total pressure was kept constant. The tribological tests were performed on a pin-on-disc tribometer in terrestrial atmosphere with 100Cr6 steel, Al2O3 and Si3N4 balls as sliding counter-bodies. The wear tracks, the ball-wear scars and the wear debris were analysed by scanning electron microscopy in order to characterize the dominant wear mechanisms. http://www.sciencedirect.com/science/article/B6V5B-4KPX8P8-2/1/e4780f73192f0226bed5b67337ef3399