Abstract This investigation addresses the effect provided by industrial surface finishes on the tribocorrosion properties of 316L stainless steel exposed to NaCl solution. Three distinct surface treatments were evaluated: passivation (SSO), electropolishing-passivation (SSEP) and micro-undulation (SSM mechano-chemical + electropolishing + passivation). For the tribocorrosion tests, a potentiostatic approach was considered in order to highlight the alloy behavior under two opposite situations, where repassivation of the surface would be thermodynamically possible or not (anodic or cathodic polarization, respectively). The outcomes demonstrated that the surface treatments were either harmful (SSEP) or beneficial (SSM) in terms of resulting tribocorrosion resistance. The specific topography of the micro-undulated sample decreased the real contact area and improved the surface lubrication in aqueous medium. SSEP presented the highest chemical wear and several factors seemed to have contributed for it, including the chemical, mechanical and structural properties of the passive film. Regardless the surface treatment, the tribocorrosion response was modified by the applied potential and more severe damage was determined under anodic polarization. At this potential, calculations of the total surface degradation suggested that volume loss was mainly dominated by chemical wear.

中文翻译：

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工业应用表面处理工艺对 316L 不锈钢摩擦腐蚀性能的影响

摘要 本研究探讨了工业表面处理对暴露于 NaCl 溶液中的 316L 不锈钢摩擦腐蚀特性的影响。评估了三种不同的表面处理：钝化 (SSO)、电抛光-钝化 (SSEP) 和微起伏（SSM 机械化学 + 电抛光 + 钝化）。对于摩擦腐蚀测试，考虑采用恒电位方法以突出两种相反情况下的合金行为，其中表面的再钝化在热力学上可能或不可能（分别为阳极或阴极极化）。结果表明，就产生的耐摩擦腐蚀而言，表面处理是有害的（SSEP）或有益的（SSM）。微起伏样品的特定形貌减少了实际接触面积并改善了水性介质中的表面润滑。SSEP 表现出最高的化学磨损，似乎有几个因素促成了它，包括钝化膜的化学、机械和结构特性。无论表面处理如何，摩擦腐蚀响应都被施加的电位改变，更严重的损坏在阳极极化下确定。在这种情况下，总表面退化的计算表明，体积损失主要由化学磨损决定。无论表面处理如何，摩擦腐蚀响应都被施加的电位改变，更严重的损坏在阳极极化下确定。在这种情况下，总表面退化的计算表明，体积损失主要由化学磨损决定。无论表面处理如何，摩擦腐蚀响应都被施加的电位改变，更严重的损坏在阳极极化下确定。在这种情况下，总表面退化的计算表明，体积损失主要由化学磨损决定。