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首页> 外文期刊>Applied Surface Science >Effect of surface roughness on leakage current and corrosion resistance of oxide layer on AZ91 Mg alloy prepared by plasma electrolytic oxidation
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Effect of surface roughness on leakage current and corrosion resistance of oxide layer on AZ91 Mg alloy prepared by plasma electrolytic oxidation

机译：表面粗糙度对等离子电解氧化AZ91镁合金氧化层漏电流和耐蚀性的影响

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摘要

The influence of the surface roughness of Mg alloys on the electrical properties and corrosion resistance of oxide layers obtained by plasma electrolytic oxidation (PEO) were studied. The leakage current in the insulating oxide layer was enhanced by increasing the surface roughness, which is a favorable characteristic for the material when applied to hand-held electronic devices. The variation of corrosion resistance with surface roughness was also investigated. The corrosion resistance was degraded by the increasing surface roughness, which was confirmed with DC polarization and impedance spectroscopy. Pitting corrosion on the passive oxide layer was also analyzed with a salt spray test, which showed that the number of pits was not affected by the surface roughness when the spray time reached 96h.
机译：研究了镁合金表面粗糙度对等离子电解氧化法（PEO）获得的氧化层电学性能和耐蚀性的影响。通过增加表面粗糙度来增加绝缘氧化物层中的泄漏电流，当用于手持式电子设备时，这是该材料的有利特性。还研究了耐蚀性随表面粗糙度的变化。耐腐蚀性由于表面粗糙度的增加而降低，这已通过直流极化和阻抗谱得到了证实。还通过盐雾测试分析了钝化氧化物层上的点蚀，该结果表明，当喷涂时间达到96h时，凹坑的数量不受表面粗糙度的影响。

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  • 来源
    《Applied Surface Science》 |2010年第22期|p.6667-6672|共6页
  • 作者

    Bongyoung Yoo; Ki Ryoung Shin; Duck Young Hwang; Dong Heon Lee; Dong Hyuk Shin;

  • 作者单位

    Department of Metallurgy and Materials Science, Hanyang University, Ansan 426-791, Republic of Korea;

    Department of Metallurgy and Materials Science, Hanyang University, Ansan 426-791, Republic of Korea;

    R&D Center, Iljin Copper Foil, Co. Ltd., Yeongi-Cun 339-824, Republic of Korea;

    Department of Metallurgy and Materials Science, Hanyang University, Ansan 426-791, Republic of Korea;

    Department of Metallurgy and Materials Science, Hanyang University, Ansan 426-791, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    mg alloy; plasma electrolytic oxidation; corrosion; surface roughness;

    机译：镁合金等离子体电解氧化腐蚀;表面粗糙度;

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