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首页> 外文期刊>Journal of Magnesium and Alloys >Comparison of the corrosion behavior of AM60 Mg alloy with and without self-healing coating in atmospheric environment
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Comparison of the corrosion behavior of AM60 Mg alloy with and without self-healing coating in atmospheric environment

机译：大气环境中AM60mg合金腐蚀行为的比较大气环境中的自愈涂层

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摘要

Coatings on the surface of Mg alloys are inevitably damaged during their practical applications, and corrosion can easily initiate from the damaged areas to accelerate the failure of Mg parts. A dual self-healing coating has already been developed to solve this problem in our previous work. Considering the practical application of this coating, it is necessary to investigate its service behavior in atmospheric environment. Thus, the corrosion behavior of AM60 Mg substrate with and without the self-healing coating was compared in Shenyang industrial atmospheric environment. The results show that the enrichment of sediments and rainwater on the scratch areas can accelerate the corrosion of the exposed Mg substrate. The inhibitors can be released from the damaged coating to inhibit corrosion. The dual self-healing coating shows better inhibition ability to narrow scratches due to the higher inhibitor concentration and less resumption. Also, the coating with wide scratches displays enough inhibition ability as well. The dual self-healing coating is a good alternative for Mg alloy parts in the practical applications.
机译：在其实际应用期间，Mg合金表面的涂层不可避免地受损，并且腐蚀可以容易地从受损区域开始引发，以加速MG零件的失效。已经开发出双重自我修复涂层来解决我们以前的工作中这个问题。考虑到这种涂层的实际应用，有必要在大气环境中调查其服务行为。因此，在沉阳工业大气环境中比较了AM60mg衬底与自愈涂层的腐蚀行为。结果表明，沉积物沉积物和雨水的富集可以加速暴露的Mg底物的腐蚀。抑制剂可以从损坏的涂层释放以抑制腐蚀。双重自愈涂层表明，由于抑制剂浓度较高和恢复较少，缩小划痕的更好的抑制能力。而且，具有宽划痕的涂层也显示出足够的抑制能力。双自愈合涂层是实际应用中Mg合金零件的替代方案。

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