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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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化学镀镍磷表面改性Cu-Zn-Al形状记忆合金的腐蚀行为
, PP. 63-66
Keywords: 记忆合金,人工体液,腐蚀
Abstract:
采用电化学方法研究了Cu-Zn-Al形状记忆合金(SMA)及其化学镀镍磷表面改性试样在Tyrode's人工体液中的腐蚀行为.结果表明，在Tyrode's人工体液中Cu-Zn-AlSMA发生脱锌腐蚀.化学镀镍磷Cu-Zn-AlSMA随NaCl浓度增加、pH值降低、环境温度升高，阳极活性电流密度增大，电化学溶解敏感性增强.X-射线衍射分析结果表明，Cu-Zn-AlSMA表面化学镀镍磷后，形成了非晶态镀层，其在Tyrode's人工体液中的耐蚀性显著提高；这是由于改性表面形成均匀、稳定的阻碍性镀层，有效地将基体金属和外界腐蚀介质隔绝而达到防护作用.镀镍磷
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