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Tribocorrosion Behavior and Degradation Mechanism of 316L Stainless Steel in Typical Corrosive Media
Acta Metallurgica Sinica-English Letters ( IF 2.9 ) Pub Date : 2021-01-20 , DOI: 10.1007/s40195-020-01182-1
Liwen Tan , Zhongwei Wang , Yanlong Ma

The tribocorrosion behavior and degradation mechanism of 316L stainless steel, in four typically industrial corrosion media, under different potentials, were studied. The results indicated that they strongly depended on corrosion medium and electrode potential. When the potential increased from cathodic protection region to anodic region, corrosion was accelerated. It dramatically promoted mechanical wear which even dominated the total material loss. As a result, the total material loss increased sharply, though the material degradation directly caused by corrosion was slight. This phenomenon was more noticeable when the media were more aggressive. Especially in NaCl solution, the occurrence of pitting corrosion at anodic potential dramatically accelerated the degradation of the stainless steel. There was a special case in NaOH solution under cathodic protection potential. The corrosive reaction could still occur and couple with wear, which led to the abnormally great material loss compared with that in other corrosion media.



中文翻译:

316L不锈钢在典型腐蚀介质中的摩擦腐蚀行为和降解机理

研究了在四种典型的工业腐蚀介质中,在不同电势下316L不锈钢的摩擦腐蚀行为和降解机理。结果表明,它们强烈依赖于腐蚀介质和电极电势。当电位从阴极保护区到阳极区增加时,腐蚀加速。它极大地促进了机械磨损,甚至占总材料损失的主导地位。结果,尽管由腐蚀直接引起的材料降解很小,但是总材料损耗急剧增加。当媒体更具侵略性时,这种现象更加明显。尤其是在NaCl溶液中,在阳极电势上出现点蚀会极大地加速不锈钢的降解。NaOH溶液在阴极保护电位下有一种特殊情况。与其他腐蚀介质相比,腐蚀反应仍可能发生并伴有磨损,这导致异常大的材料损失。

更新日期:2021-01-20
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