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Performance of Mg-Sn surface alloys for the sacrificial cathodic protection of Mg alloy AZ31B-H24

机译:镁锡表面合金对镁合金AZ31B-H24的牺牲阴极保护性能

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摘要

Three solid solution Mg-xSn (x = 1, 5, 10 wt%) alloys are evaluated as candidates for the sacrificial cathodic protection of AZ31B-H24. The performance of each alloy was studied in situ with global and local measurements of galvanic couples between Mg-Sn alloys and AZ31B-H24 when immersed in 0.6 M aqueous NaCl solution. Mg-1Sn was shown to galvanically protect AZ31B-H24 for 24 h with 95% efficiency. Polarity reversal was observed for Mg-5Sn during the initial 10 h, after which protection was offered; and Mg-10Sn provided no protection. Self-corrosion rates of 60% and 52% were observed for Mg-1Sn and Mg-5Sn alloys, respectively.
机译:评价了三种固溶Mg-xSn(x = 1、5、10 wt%)合金作为AZ31B-H24牺牲阴极保护的候选材料。当浸入0.6 M NaCl水溶液中时,通过对Mg-Sn合金和AZ31B-H24之间的电偶进行整体和局部测量,现场研究了每种合金的性能。 Mg-1Sn被证明可以以95%的效率对AZ31B-H24进行24小时的电流保护。在最初的10小时内观察到Mg-5Sn的极性反转,此后提供了保护。 Mg-10Sn没有提供保护。 Mg-1Sn和Mg-5Sn合金的自腐蚀率分别为60%和52%。

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  • 来源
    《Corrosion science》 |2019年第4期|195-206|共12页
  • 作者单位

    Univ Virginia, Dept Mat Sci & Engn, Ctr Electrochem Sci & Engn, Charlottesville, VA 22904 USA;

    Univ Virginia, Dept Mat Sci & Engn, Ctr Electrochem Sci & Engn, Charlottesville, VA 22904 USA;

    Univ Virginia, Dept Mat Sci & Engn, Ctr Electrochem Sci & Engn, Charlottesville, VA 22904 USA;

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

    Magnesium; Cathodic protection; AZ31B-H24; SVET;

    机译:镁;阴极保护;AZ31B-H24;SVET;
  • 入库时间 2022-08-18 04:13:37

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