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.

脆性，相对较高的摩擦系数和磨损率限制了陶瓷涂层作为耐磨层的应用。但是，由于已证明将添加剂嵌入陶瓷基体是改善涂层性能的有效方法，因此将不同含量和大小的h-BN添加到YSZ悬浮液中。然后，通过悬浮等离子喷涂制备了YSZ / h-BN复合涂层，其摩擦学分析表明：i）通过将h-BN掺入YSZ涂层中可以降低摩擦系数和降低磨损率。ii）较细的h-BN颗粒更有助于增强涂层的摩擦学性能。iii）最佳含量取决于h-BN粒径。iv）当h-BN夹杂物的含量和大小增加时，显微硬度的概率分布可以变成双峰的。总结了三种磨损表面状况，并讨论了它们的磨损机理。