6533b7d3fe1ef96bd12608e1

RESEARCH PRODUCT

Microstructural, mechanical and tribological properties of suspension plasma sprayed YSZ/h-BN composite coating

Marie-pierre PlancheAlain AllimantYongli ZhaoAudrey LasalleYan WangZexin YuG. MontavonFrançois PeyrautHanlin Liao

subject

Materials scienceComposite number02 engineering and technologyengineering.materialTribology021001 nanoscience & nanotechnologyCeramic matrix composite020303 mechanical engineering & transports0203 mechanical engineeringCoatingvisual_artMaterials ChemistryCeramics and Compositesengineeringvisual_art.visual_art_mediumSuspension plasma sprayParticleCeramicComposite material0210 nano-technologySuspension (vehicle)

description

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.

yearjournalcountryeditionlanguage
2018-10-01Journal of the European Ceramic Society
https://doi.org/10.1016/j.jeurceramsoc.2018.06.007