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Influence of metallurgical parameters on the electrochemical behavior of electrodeposited Ni and Ni-W nanocrystalline alloys

机译:冶金参数对电沉积Ni和Ni-W纳米晶合金电化学行为的影响

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摘要

The electrochemical behavior of electrodeposited nickel and Ni-W nanostructured alloys is discussed by studying the polarization curves in acidic medium. As tungsten content varies, several metallurgical parameters that can influence the electrochemical behavior are also modified, namely grain size, nature of grain boundaries, crystallographic texture and light element contamination. Comparing the behavior of Ni-W coatings with that of pure nickel and annealed coatings highlights that tungsten incorporation enhances anodic dissolution and has a detrimental influence on passive film, whereas grain size and grain boundary character behave as second-order parameters. (C) 2016 Elsevier B.V. All rights reserved.
机译:通过研究酸性介质中的极化曲线,探讨了电沉积镍和镍钨纳米结构合金的电化学行为。随着钨含量的变化,一些会影响电化学行为的冶金参数也被修改,即晶粒尺寸,晶界性质,晶体织构和轻元素污染。将Ni-W镀层与纯镍和退火镀层的行为进行比较,结果表明,钨的掺入会增强阳极溶解,并且对钝化膜产生不利影响,而晶粒尺寸和晶界特征则作为第二阶参数。 (C)2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第may1期|149-159|共11页
  • 作者单位

    Univ La Rochelle, CNRS UMR 7356, Lab Sci Ingn Environm, Ave Michel Crepeau, F-17042 La Rochelle, France;

    Univ La Rochelle, CNRS UMR 7356, Lab Sci Ingn Environm, Ave Michel Crepeau, F-17042 La Rochelle, France;

    Univ La Rochelle, CNRS UMR 7356, Lab Sci Ingn Environm, Ave Michel Crepeau, F-17042 La Rochelle, France;

    Univ La Rochelle, CNRS UMR 7356, Lab Sci Ingn Environm, Ave Michel Crepeau, F-17042 La Rochelle, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ni-W; Nanocrystalline; Electrodeposition; Microstructure characterization; Corrosion;

    机译:Ni-W;纳米晶;电沉积;显微组织表征;腐蚀;

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