Structural and tribological characterization of tungsten nitride coatings at el...

• Autor(es): Polcar, T. ; Parreira, N. M. G. ; Cavaleiro, A.
• Data: 2008
• Identificador Persistente: http://hdl.handle.net/10316/4173
• Origem: Estudo Geral - Universidade de Coimbra
• Assunto(s): Tungsten nitride; Sliding wear; Oxidation; Elevated temperature
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

Transition metal nitrides exhibit excellent mechanical properties (hardness and Young's modulus), high melting point, good chemical stability and high electrical conductivity. However, tungsten nitrides still stand aside of the main attention. In our previous study, tungsten nitride coatings with different nitrogen content showed excellent wear resistance at room temperature. Nevertheless, many engineering applications require good tribological properties at elevated temperature. Thus, the present study is focused on the tribological behaviour (friction coefficient and wear rate) of tungsten nitride coatings at temperature up to 600 °C. http://www.sciencedirect.com/science/article/B6V5B-4RB5BF5-1/1/6ffc2ab4ae69065578a9c8490d148981