| 铝合金锌系磷化膜防护失效机理探讨 |
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| 引用本文： | 张圣麟,王绍领,陈燕燕,荆树科.铝合金锌系磷化膜防护失效机理探讨[J].材料保护,2009,42(6). |
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| 作者姓名： | 张圣麟 王绍领 陈燕燕 荆树科 |
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| 作者单位： | 河南师范大学化学与环境科学学院,河南,新乡,453007;濮阳职业技术学院石油化工与环境工程系,河南,濮阳,457000 |
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| 摘 要： | 为加深对磷化膜防护失效机理的认识,采用电化学方法和扫描电镜(SEM)考察了铝合金锌系磷化膜在不同溶液中的腐蚀与防护特性.结果表明:磷化膜的活性溶解出现在酸性和中性溶液里;钝化出现在碱性溶液里.磷化膜的防护性能主要依靠于其机械屏障作用,化学溶解是磷化膜防护失效的主要形式.
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| 关 键 词： | 锌系磷化膜 铝合金 电化学腐蚀 防护失效 机理 |
Failure Mechanism of Zinc Series Phosphating Coatings on Aluminum Alloy |
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| ZHANG Sheng-lin,WANG Shao-ling,CHEN Yan-yan,JING Shu-ke.Failure Mechanism of Zinc Series Phosphating Coatings on Aluminum Alloy[J].Journal of Materials Protection,2009,42(6). |
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| Authors: | ZHANG Sheng-lin WANG Shao-ling CHEN Yan-yan JING Shu-ke |
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| Affiliation: | ZHANG Sheng-lin1,WANG Shao-ling1,CHEN Yan-yan1,JING Shu-ke(1.School of Chemistry & Environmental Science,Henan Normal University,Xinxiang 453007,China,2.Department of Petroleum Chemical , Environmental Engineering,Puyang College of Vocational Technology,Puyang 457000,China) |
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| Abstract: | The corrosion and protection characteristics of zinc series phosphating coatings on aluminum alloy in various aqueous solutions were investigated by making use of electrochemical measurement and scanning elec-tron microscopic(SEM)observation.Results show that active dissolution of the phosphating coating occurs in acidic and neutral solutions,while passivation occurs in alkaline solution.The pro-tective ability of the phosphating coating mainly depends on the mechanical harrier action,and chemical dissoluti... |
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| Keywords: | Zn series phosphating coating Al alloy electrochemical corrosion failure mechanism |
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