张娟,李周,唐宁,陈畅

• 1:中南大学材料科学与工程学院

摘要(Abstract)：

利用失重法、X射线衍射分析、扫描电镜与能谱分析等手段研究了Cu-Zn-Al-Ni-B-Ce合金在自来水和去离子水配置的NaCl(35g/L)+NH4Cl(26.75g/L)腐蚀液中的耐腐蚀性能及其腐蚀行为。结果表明:该合金在溶液中的腐蚀产物均主要为稀土氧化物(Ce4O7)、铜的碱式氯化物(Cu(OH)Cl)和铜氨络合物的水合物(Cu(OH)2NH3.H2O);在去离子水溶液中合金的腐蚀速率为1.60×10-3mm/a,在自来水溶液中的腐蚀速率达到了7.51×10-2mm/a;合金在两种腐蚀液中均有沿晶界腐蚀现象,合金在自来水溶液中的腐蚀产物厚度10~20μm,远大于合金在去离子水中的腐蚀产物厚度1μm左右,且经去离子水溶液腐蚀后的合金表面比经自来水溶液腐蚀后的平滑。

关键词(KeyWords)： 稀土铝黄铜;腐蚀;自来水;去离子水

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划项目(2006AA03Z517);; 国际铜业协会”耐蚀铜合金”资助项目(MBP3553)

作者(Author): 张娟,李周,唐宁,陈畅

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