张忠明,马莹,马艳艳,白力静,徐春杰,惠增哲

• 1:西安理工大学材料科学与工程学院陕西省电工材料与熔(浸)渗技术重点实验室
• 2:西安工业大学材料与化工学院陕西省光电功能材料与器件重点实验室
• 3:西安航空学院材料工程学院

摘要(Abstract)：

采用微弧氧化工艺在Mg-1Zn-1Mn合金表面制备微弧氧化陶瓷膜。借助扫描电镜、激光扫描共聚焦显微镜、能谱分析仪和X射线衍射分析仪对氧化膜的微观结构和相组成进行表征,通过电化学方法和浸泡实验研究陶瓷膜在模拟体液中的耐腐蚀性。结果表明:微弧氧化5 min可在Mg-1Zn-1Mn合金表面形成光滑平整、厚度为10μm并与基体结合良好的陶瓷膜,其主要由Mg O和Mg2Si O4组成,为典型的多孔结构;微弧氧化陶瓷膜可使Mg-1Zn-1Mn合金产生钝化,显著提高合金在SBF溶液中的耐腐蚀性,腐蚀速率降低至0.026 mm/a,耐腐蚀性提高近10倍。陶瓷膜裂纹和腐蚀介质与陶瓷膜反应造成的破损使得腐蚀液渗入到合金与陶瓷膜界面,导致SBF溶液与合金接触发生反应,造成点蚀和丝状腐蚀。

关键词(KeyWords)： Mg-1Zn-1Mn合金;微弧氧化;模拟体液;腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 陕西省教育厅科学研究计划项目(2013JK0906);; 陕西省重点学科建设专项资金资助项目(陕财办教2008-171);; 陕西省光电功能材料与器件重点实验室项目(ZSKJ201302)

作者(Author): 张忠明,马莹,马艳艳,白力静,徐春杰,惠增哲

DOI: 10.13289/j.issn.1009-6264.2018-0049

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