Tungsten oxide with different oxygen contents: Sliding properties

• Author(s): Polcar, T. ; Parreira, N. M. G. ; Cavaleiro, A.
• Date: 2007
• Persistent ID: http://hdl.handle.net/10316/4200
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Tungsten oxide; Reactive sputtering; Mechanical properties; Tribology
• Document Type: Article
• Language: English

Description

In this study, tungsten oxide coatings with 13 and 75 at% of oxygen were prepared by DC reactive magnetron sputtering from a pure W target in an Ar+O2 atmosphere. The coating hardness (H) decreased with increasing oxygen content from 25 to 7.7 GPa. The values of H/E ratio were 0.08 and 0.07 for W87O13 and W25O75, respectively. http://www.sciencedirect.com/science/article/B6TW4-4NG3T6T-3/1/f9d8350fca3dc06d1dc34428f36c4c04