镁-锂合金的锌系及锰系磷化膜的比较

Electroplating & Pollution Control(2011)

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Abstract
观察了镁-锂合金锌系磷化膜和锰系磷化膜的宏观形貌及微观形貌,分析了2种膜层的化学组成,通过极化曲线、交流阻抗对比了基体、锌系磷化膜、锰系磷化膜的电化学性能,并比较了2种膜层的综合性能。结果表明:锌系磷化膜与锰系磷化膜对镁-锂合金基体具有较大的防护作用,尤其是锌系磷化膜膜厚,膜电阻大,自腐蚀电流密度小,耐蚀性更优。
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Key words
polarization curve,EIS,Mg-Li alloy,manganese phosphating film,zinc phosphating film
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