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冲蚀腐蚀
空化
冶金
材料科学
空化侵蚀
腐蚀
声化学
腐蚀
超声波传感器
复合材料
化学
地质学
物理
机械
古生物学
有机化学
声学
作者
Xinlu Shi,Dandong Cui,Zheng Wei,Sheng Hong
标识
DOI:10.1016/j.ultsonch.2023.106629
摘要
The present study emphasizes the role of sulphide on ultrasonic cavitation erosion-corrosion (UCE-C) behaviors of HVOF-sprayed WC-Cr3C2-Ni coating in 3.5 wt.% NaCl solution with different sulphide concentrations. The results indicated that the ultrasonic cavitation erosion (UCE) resistance of the coating decreased significantly with increasing sulphide concentration. The coating reacted with oxygen and anion those transferred by UCE, and the cavitation impact force led to the lack of support for tungsten carbide particles, which resulted in the reduction in the mass of the coating. There were two main factors those affected the UCE-C mechanism, in which the passivation film helped to reduce the mass loss of the coating, while the impact force caused by cavitation destroyed the passivation film, led to the accelerated anion diffusion and ultimately accelerated the mass loss of the coating. Mechanical erosion dominated the UCE-C of the coating in all tested solutions.
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