河南航天精工制造有限公司;南京航空航天大学;
[目的]处于海洋环境中的典型Cd镀层30Cr Mn Si A紧固件在应力条件下的腐蚀行为需要深入研究。[方法]在施加扭矩3.5 N·m的情况下研究了镀Cd紧固件在人工海水中的耐蚀性。对经过不同加工后处理的试样进行电化学阻抗谱(EIS)和动电位极化曲线(PDP)测试，通过扫描电子显微镜(SEM)观察腐蚀表面及腐蚀产物的微观形貌，通过X射线衍射仪(XRD)分析腐蚀产物的物相组成。[结果]镀Cd紧固件经合适的后处理后，能承受168 h中性盐雾试验，应力条件下的电化学测试后，腐蚀电流密度为10-5 A/cm~2量级，极化电阻大于2 kΩ·cm~2。[结论]在实际应力条件下，典型Cd镀层对服役于海洋环境中的30Cr Mn Si A紧固件有一定的耐蚀作用。后处理选择戴手套磨和磨削液清洗为最佳，切勿用乙醇进行清洗。
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基本信息:
DOI：10.19289/j.1004-227x.2025.04.002
中图分类号:TQ153.17
引用信息:
[1]袁永恒,鲍思洁,谢茂阳等.典型Cd镀层30CrMnSiA紧固件在模拟海水中的应力腐蚀行为[J].电镀与涂饰,2025,44(04):9-15.DOI:10.19289/j.1004-227x.2025.04.002.
基金信息:
河南省紧固连接技术重点实验室资助（JGLJ2312）