Abstract Rolling contact fatigue (RCF) of sprayed coating is complicated process relating to materials, structures, loading conditions, etc. Herein, the research works over the past decades in RCF of sprayed coatings are summarized here to provide a guidance to further explore the new research interests. Firstly, comprehensive summaries including the common RCF-resisted coating materials, the regular RCF setups, typical failure modes of sprayed coatings, and statistical characterization methods for RCF lifetime are illustrated. Secondly, the influence of surface integrity on RCF behavior of sprayed coating is discussed. The according mechanisms are also discussed by fracture analysis, numerical calculation, and finite element method (FEM). Thirdly, the influence of working condition on RCF behavior of sprayed coating is discussed. The shear stress is recognized as the major contribution of the RCF fracture, and the sliding during rolling contact will deteriorate the lifetime of sprayed coating. Additionally, some new techniques and methodologies have been reported in the investigations of RCF behaviors of sprayed coatings. Nondestructive testing (NDT) and signal processing methods are critical in the detection of micro-fractures within the sprayed coatings. Finally, we have proposed some suggests in future investigation of RCF of sprayed coating based on the previous research achievements.

中文翻译：

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热喷涂涂层的滚动接触疲劳行为：综述

摘要 喷涂涂层的滚动接触疲劳（RCF）是一个复杂的过程，涉及材料、结构、载荷条件等。这里总结了过去几十年喷涂涂层滚动接触疲劳的研究工作，为进一步探索新的涂层滚动接触疲劳提供指导。研究兴趣。首先，对常见的抗RCF涂层材料、常规RCF设置、喷涂涂层的典型失效模式以及RCF寿命的统计表征方法进行了全面总结。其次，讨论了表面完整性对喷涂涂层RCF行为的影响。还通过断裂分析、数值计算和有限元方法 (FEM) 讨论了相应的机制。第三，讨论了工作条件对喷涂涂层RCF行为的影响。剪切应力被认为是 RCF 断裂的主要贡献，滚动接触过程中的滑动会降低喷涂涂层的寿命。此外，在喷涂涂层的 RCF 行为研究中还报道了一些新技术和方法。无损检测 (NDT) 和信号处理方法对于检测喷涂涂层中的微裂纹至关重要。最后，我们在前人研究成果的基础上，对未来喷涂涂层的RCF研究提出了一些建议。无损检测 (NDT) 和信号处理方法对于检测喷涂涂层中的微裂纹至关重要。最后，我们在前人研究成果的基础上，对未来喷涂涂层的RCF研究提出了一些建议。无损检测 (NDT) 和信号处理方法对于检测喷涂涂层中的微裂纹至关重要。最后，我们在前人研究成果的基础上，对未来喷涂涂层的RCF研究提出了一些建议。