Cl-浓度对镁.铝合金β相模型合金腐蚀电化学行为的影响
Influence of Cl-Concentration on Corrosion Behavior of a Model β-phase Magnesium-aluminum Alloy
查看参考文献15篇
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文摘
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对镁一铝合金β相模型合金在不同浓度的CI一溶液环境中的腐蚀电化学行为进行研究,结果表明,随着Cl-浓度的增加,β相的自腐蚀电位依次降低.但β相与α相之间的电位差没有随Cl-浓度的增加递增.β相在不同浓度的C1-溶液中均能发生钝化,随Cl-浓度的增加点蚀击破电位降低,相应表面膜中含Mg的腐蚀产物种类也增多,在不同浓度Cl-溶液环境中,β相模型合金的腐蚀电化学结果可以揭示β相的微电偶作用 |
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其他语种文摘
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The electrochemical behavior of a modei p phase Mg-Al alloy was investigated in solutions with different concentrations of Cl-in comparison with model α phase alloy. The results indicated that the increase of Cl-concentration may decrease the corrosion potential of p phase. However, there is no distinct in potential difference between β phase and α phase. The β phase may be passivated in solutions with different concentrations of Cl-. With the increasing of Clconcentration the pitting breakdown potential of p phase slightly lower. There is excess Cl-doping the formed corrosion scales on β phase surface as the Cl-concentration increases. It is expected that β phase in magnesium-aluminum alloy may play certain role in micro galvanic couple with substrate in atmosphere corrosion in sodium chloride polluted environments |
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来源
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腐蚀科学与防护技术
,2010,22(6):474-478 【核心库】
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关键词
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镁一铝合金
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β相
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Cl-浓度
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电化学腐蚀
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地址
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1.
内蒙古工业大学材料学院, 内蒙古轻金属材料重点实验室, 呼和浩特, 010051
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中国科学院金属研究所, 金属腐蚀与防护国家重点实验室, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1002-6495 |
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学科
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金属学与金属工艺 |
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基金
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内蒙古工业大学科研基金
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文献收藏号
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CSCD:4059560
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