李高林,文九巴,贺俊光,马景灵,杨永顺,李君峰

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

通过静态失重法、电化学测试法、扫描电子显微镜、X射线衍射等测试手段对添加不同含量稀土元素Y的AZ80镁合金的微观组织和腐蚀性能进行了研究。结果表明:稀土Y的加入使实验合金中β-Mg17Al12相的数量明显减少,并且由连续网状分布变为断续状、均匀分布。同时,Y与合金中Al结合形成块状或颗粒状的稀土相Al2Y。本实验条件下,添加0.5%Y合金的耐腐蚀性能最佳,腐蚀速率为0.2585 mg.cm-2.d-1,仅为原始合金腐蚀速率的48.07%,此外加入适量Y可提高合金的平衡电位和腐蚀电位,降低腐蚀电流密度,提高了合金的耐蚀性能。

关键词(KeyWords)： 钇;AZ80镁合金;微观组织;腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 西北工业大学凝固技术国家重点实验室开放课题资助项目(SKLSP201008);; 河南省自然科学基金项目(092300410132);; 河南省科技攻关项目(072102230007)

作者(Author): 李高林,文九巴,贺俊光,马景灵,杨永顺,李君峰

DOI: 10.13289/j.issn.1009-6264.2012.03.012

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