刘洪喜,孟春蕾,林波,蒋业华,周荣锋

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

利用金属蒸汽真空弧(MEVVA)离子源在AZ31镁合金表面进行了氮钛(N/Ti)双离子共注入。通过俄歇电子能谱(AES)、扫描电镜(SEM)、X射线衍射(XRD)、电化学测试系统和显微硬度计,分析比较了双离子共注入前后试样表面的相组成、原子浓度-深度分布、抗腐蚀性能和显微硬度。结果表明:基体合金表面改性层主要由Mg、MgO、Ti、TiO2、TiN等相组成;改性层厚约180 nm;处理后试样显微硬度较基体提高了50%;在3.5%饱和NaCl溶液中的腐蚀电位提高600 mV,腐蚀电流密度下降110μA.cm2,极化电阻增加了67.9倍。

关键词(KeyWords)： 离子注入;AZ31镁合金;抗腐蚀性能;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然基金(50671045);; 云南省自然基金(2008ZC021M);; 昆明理工大学分析测试基金(2009-022)

作者(Author): 刘洪喜,孟春蕾,林波,蒋业华,周荣锋

DOI: 10.13289/j.issn.1009-6264.2011.08.026

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