ABSTRACT The tungsten-carbide coatings could be employed to minimise failures of gears due to excessive wear in hostile operating atmospheres. In this work, WC-Cr3C2-Ni powder was deposited on the SS 316L substrate using APS and HVOF processes. The deposited coatings were characterised and investigated for the effects of dissimilar counter bodies. The unidirectional sliding experiments were conducted on the ball-on-disc tribometer (ASTM G99-95a). The variable contact pressure was applied to simulate the tangible effect of contact stress variation during the dry sliding in the gears. The wear mechanisms depicted that the wear is in the mild regime and better durability of both coatings. The results of tribo-testing and analysis of results by ANOVA confirmed that contact pressure and hardness of counter body are significant factors influencing friction and wear. Furthermore, the relation between contact surface temperature and adhesion of debris to the surface has been studied.

中文翻译：

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用于齿轮的 APS 和 HVOF 喷涂 WC-Cr3C2-Ni 涂层的摩擦行为

摘要 碳化钨涂层可用于最大限度地减少由于恶劣工作环境中过度磨损而导致的齿轮故障。在这项工作中，WC-Cr3C2-Ni 粉末使用 APS 和 HVOF 工艺沉积在 SS 316L 基板上。对沉积的涂层进行表征并研究不同反体的影响。单向滑动实验在球盘摩擦计（ASTM G99-95a）上进行。应用可变接触压力来模拟齿轮干滑动过程中接触应力变化的有形影响。磨损机制表明磨损处于温和状态，两种涂层的耐久性更好。摩擦测试结果和方差分析结果证实，接触压力和对应体的硬度是影响摩擦和磨损的重要因素。此外，还研究了接触表面温度与碎屑粘附到表面之间的关系。