Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7897841 | Journal of the European Ceramic Society | 2018 | 11 Pages |
Abstract
Brittleness, relative high friction coefficient and wear rate limit the applications of ceramic coatings as wear-resistant layers. However, because embedding additives with ceramic matrix has demonstrated to be an effective way to improve coating performances, different contents and size of h-BN were added into an YSZ suspension. Afterwards, the YSZ/h-BN composite coatings were manufactured by suspension plasma spray and their tribological analysis indicated that: i) the reduction of the friction coefficient and wear rate can be achieved by incorporating h-BN into YSZ coating. ii) finer h-BN particle is more helpful to enhance the tribological properties of the coating. iii) the optimum content is dependent on h-BN particle sizes. iv) when the contents and the size of the h-BN inclusion increase, the probability distribution of the micro-hardness can become bi-modal. Three worn surface conditions were summarized and their wear mechanisms were discussed as well.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yongli Zhao, Yan Wang, Zexin Yu, Marie-Pierre Planche, François Peyraut, Hanlin Liao, Audrey Lasalle, Alain Allimant, Ghislain Montavon,