Investigation on influence of WC–Ni addition on rolling contact fatigue behavior of plasma sprayed Ni-based alloy coating

Abstract this paper investigated on influence of WC–Ni addition on rolling contact fatigue (RCF) behavior of NiCrBSi coating. The results showed that WC–Ni addition significantly influenced on failure mode of NiCrBSi coating especially under low stress, whereas both coatings failed in identical mode under relatively high stress. WC–Ni addition also had a specific influence on RCF lives. RCF Lives of NiCrBSi/WC–Ni coating were longer than NiCrBSi under low stress, but they were almost same under relatively high stress. RCF life distribution of NiCrBSi/WC–Ni coating was more concentrated than NiCrBSi. Besides, there was a potential relationship between Weibull slope and failure mode.