Zn-Al-Mg-RE涂层自封闭特性在复合涂层中的作用机制Action mechanism of self-sealing behavior of Zn-Al-Mg-RE coating in a multilayer coating
付东兴,徐滨士,张伟,李庆芬,魏世丞
摘要(Abstract):
通过铜加速醋酸盐雾腐蚀试验,研究了自封闭特性在Zn-Al-Mg-RE高速电弧喷涂层与舰船涂料结合成防腐复合涂层中的作用。经过480h的试验,在基体上直接涂装涂料的试样表面的划痕里充满了铁锈,而中间喷有高速电弧喷涂层的试样表面划痕里只有少量的白锈。这说明在腐蚀环境中,Zn-Al-Mg-RE高速电弧喷涂层表面的微观孔隙能够被自身的腐蚀产物堵塞,生成的腐蚀产物非常致密,能够阻止缺陷处继续被腐蚀。从试验结果可知在复合涂层体系中,高速电弧喷涂层的自封闭特性起到了积极的作用。
关键词(KeyWords): Zn-Al-Mg-RE;高速电弧喷涂层;自封闭;腐蚀
基金项目(Foundation): 再制造技术国防科技重点实验室预研基金(51489020-304js9101)
作者(Author): 付东兴,徐滨士,张伟,李庆芬,魏世丞
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