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首页> 外文期刊>Journal of Materials Engineering and Performance >Effects of Cerium and Lanthanum on the Corrosion Behavior of Al-3.0 wt.%Mg Alloy
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Effects of Cerium and Lanthanum on the Corrosion Behavior of Al-3.0 wt.%Mg Alloy

机译：铈和镧对Al-3.0 wt。％Mg合金腐蚀行为的影响

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摘要

Effects of rare earth elements (R-E: cerium and lanthanum) on the corrosion behavior of Al-3.0 wt.%Mg alloy were investigated by electrochemical measurement and immersion test in 3.5 wt.% NaCl solution. The results indicated that a proper amount of rare earth (about 0.2 wt.%) could improve the corrosion resistance of Al-3.0 wt.%Mg alloy effectively, whereas that excessive rare earth addition would increase the corrosion rate and reduce the corrosion resistance. The corrosion behavior of Al-3.0 wt.%Mg alloys in 3.5 wt.% NaCl solution showed typical characteristics of pitting corrosion at the position of second phases. The more and the bigger the second phases, the more and the larger the pitting holes.
机译：通过电化学测量和在3.5 wt％的NaCl溶液中浸泡测试，研究了稀土元素（R-E：铈和镧）对Al-3.0 wt。％Mg合金腐蚀行为的影响。结果表明，适量的稀土（约0.2 wt。％）可以有效地提高Al-3.0 wt。％Mg合金的耐蚀性，而过量的稀土添加会提高腐蚀速率，降低耐蚀性。 Al-3.0 wt。％Mg合金在3.5 wt。％NaCl溶液中的腐蚀行为显示出第二相位置的点蚀的典型特征。第二相越大，点蚀孔越多。

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