ABSTRACT Zr-based ceramic coatings were widely used as mechanical components due to their excellent properties. In this study, the tribological behaviours and wear mechanism of 8YSZ coating sliding against different counterpart materials (Al2O3 and stainless steel) under dry conditions were discussed, which would provide theoretical and experimental basis for selecting the optimal friction pair mate in practical engineering application. The hardness of the 8YSZ coating was tested by nano-indentation apparatus, and then elastic recovery and plastic deformation resistance were calculated. By investigating the relations of hardness to wear rate, the best combination of friction pair was ascertained. Results indicated that the 8YSZ coating sliding against various counterparts exhibited different tribological behaviours, which was closely related to the mechanical properties of counterpart material. The main wear mechanism of 8YSZ coating sliding against Al2O3 ball was brittle fracture and abrasive wear, while that of metal counterpart was adhesive wear accompanied by abrasive wear.

中文翻译：

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8YSZ涂层与不同对应物滑动的摩擦学行为

摘要 Zr 基陶瓷涂层由于其优异的性能而被广泛用作机械部件。本研究讨论了8YSZ涂层在干燥条件下与不同配对材料（Al2O3和不锈钢）滑动的摩擦学行为和磨损机制，为实际工程应用中选择最佳摩擦副提供理论和实验依据。采用纳米压痕仪测试8YSZ涂层的硬度，计算弹性回复力和抗塑性变形能力。通过研究硬度与磨损率的关系，确定了摩擦副的最佳组合。结果表明，8YSZ 涂层与各种对应物滑动表现出不同的摩擦学行为，这与对应材料的力学性能密切相关。8YSZ涂层与Al2O3球滑动的主要磨损机制是脆性断裂和磨粒磨损，而金属对应物的主要磨损机制是粘着磨损和磨粒磨损。