余彬,郭玉玲,李景潼,罗辉,王红霞,梁伟

• 1:太原理工大学材料科学与工程学院
• 2:晋中职业技术学院机电工程系

摘要(Abstract)：

为提高纯镁的耐腐蚀性能,在大气环境下,采用固态扩散锌钇共渗的方法,对纯镁进行表面改性处理,研究了不同扩散时间对合金化渗层的影响。采用OM、SEM、EDS、XRD、显微硬度测试和电化学腐蚀测试等方法对渗层的组织结构、显微硬度和耐蚀性能进行了分析。结果表明,在一定范围内随着扩散时间的延长,渗层厚度迅速增加,但当渗层具有一定厚度后再延长时间,渗层厚度的增幅急剧减小。本实验中最佳扩散时间为90 min。该渗层组织由Mg7Zn3、MgZn、α-Mg固溶体组成。表层的显微硬度得到了大幅度提高,有效改善了纯镁在3.5%NaCl溶液中的耐腐蚀性能。

关键词(KeyWords)： 纯镁;锌钇共渗层;显微硬度;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51301118,51274149);; 2013山西省高等学校科技创新项目(2013108)

作者(Author): 余彬,郭玉玲,李景潼,罗辉,王红霞,梁伟

DOI: 10.13289/j.issn.1009-6264.2014.04.033

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