Effect of substrate bias voltage on the microstructure and tribological properties of CrN coatings

Effect of substrate bias voltage on the microstructure and tribological properties of CrN coatings

Aouadi, K. Nouveau, C. Besnard, A. Tlili, B. Chafra, M. 

Arts et Metiers ParisTech, LaBoMaP, Cluny, 71250, France

Ecole Nationale d'Ingénieurs de Tunis, Campus Universitaire El Manar II, 2092 El Manar, Tunis, Tunisia

Laboratoire de Systèmes et de Mécanique Appliquée, 2078 La Marsa, Tunis, Tunisia

1 October 2015
7 January 2016
11 May 2016
| Citation



CrN films were deposited on stainless steel and silicon substrates via magnetron reactive sputtering under a systematic variation of the substrate bias voltage. The influence of this substrate bias voltage on the structural and tribological properties of the films has been investigated. The results indicate that increasing the negative bias voltage has a large influence on the characteristic of the coatings: concerning their microstructure, we observed that the grain size increased. Moreover their coefficient of friction and wear rate are also influenced by the bias voltage. 

1. Introduction
2. Experimental Details
3. Results and Discussion
4. Conclusions

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