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一种用于研究腐蚀环境中Zn-Al-Mg-RE涂层自封闭特性的新方法

, PP. 389-391

Keywords: 腐蚀,Zn-Al-Mg-RE涂层,自封闭,电弧喷涂

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Abstract:

采用自主研发的装置结合离子色谱仪研究了Zn-Al-Mg-RE涂层的自封闭特性,同时通过SEM观察了该涂层腐蚀前后表面腐蚀产物的微观形貌.结果表明随着腐蚀时间的增加,单位时间氯离子渗透通过Zn-Al-Mg-RE涂层的量不断地降低,超过504h后,单位时间氯离子渗透通过该涂层的量几乎为零;此时涂层表面被非常致密的腐蚀产物所覆盖.由此说明本文的研究方法能够更直观的证明Zn-Al-Mg-RE金属涂层具有自封闭特性.。

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