| 两种铝合金在3%NaCl溶液中的腐蚀特性 |
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| 引用本文： | 汪俊英,孔小东.两种铝合金在3%NaCl溶液中的腐蚀特性[J].腐蚀科学与防护技术,2011(1). |
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| 作者姓名： | 汪俊英 孔小东 |
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| 作者单位： | 海军工程大学化学与材料系; |
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| 摘 要： | 采用线性极化法和循环极化法,比较两种铝合金在不同pH值的3%NaCl溶液中的腐蚀速度、点蚀敏感性与蚀点发展趋势和它们的腐蚀特性.运用扫描电镜观察了铝合金的显微组织,比较铝合金的组织成分,分析杂质元素对耐蚀性能的影响.结果表明,除pH=9.5外,其它试验条件下铝合金ZL102(A)的腐蚀速度均小于铝合金LF6(B);铝合金A的点蚀敏感性较铝合金B小;铝合金B的蚀点发展趋势总体大于铝合金A;铝合金B中含多种杂质元素导致其耐点蚀性能较铝合金A差.
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| 关 键 词： | 铝合金 点蚀 线性极化 循环极化 显微组织 |
Electrochemical Corrosion Behavior of Two Al-based Alloys in 3% NaCl Solution |
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| WANG Jun-ying,KONG Xiao-dong Chemistry , Material.Electrochemical Corrosion Behavior of Two Al-based Alloys in 3% NaCl Solution[J].Corrosion Science and Protection Technology,2011(1). |
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| Authors: | WANG Jun-ying KONG Xiao-dong Chemistry Material |
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| Affiliation: | WANG Jun-ying,KONG Xiao-dong Chemistry and Material Department,Navy University of Engineering,Wuhan 430033 |
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| Abstract: | Linear polarization curves and cyclic voltammetry were used to study the corrosion behavior of two Al-alloys in 3%NaCl solutions.Scanning electron microscopy(SEM) was employed in investigating microstructure of the two Al-alloys.The results show that the corrosion rate of the alloy ZL102(A) is much smaller than the alloy LF6(B) on the whole,as well as the sensitivity to pitting corrosion and the growth tendency of corrosion pits.The pitting corrosion resistance is different between the alloy A and B because... |
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| Keywords: | aluminum alloy pitting corrosion linear polarization cyclic polarization microstructure |
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