孙毅,张文鑫,许春香,张金山,韩少兵,贾长建

• 1:太原理工大学材料科学与工程学院
• 2:先进镁基材料山西省重点实验室

摘要(Abstract)：

采用光学显微镜(OM)、扫描电镜(SEM)、X射线衍射仪(XRD)及电化学工作站等设备,研究了固溶理对Mg-3.0Zn-0.6Y-0.5Zr-0.3Ca(质量分数,%)合金显微组织及生物腐蚀性能的影响。结果表明:铸态合金的显微组织由α-Mg枝晶、条状Mg_3YZn_6相和球状Ca_2Mg_6Zn_3组成。随着固溶温度(360~450℃)的升高,合金中的析出相逐渐溶解,同时,组织中有富Zr新相析出。电化学测试结果表明,合金经420℃×24 h固溶处理后,其腐蚀电位和腐蚀电流密度分别为-1.468 V和8.943μA/cm~2,显示出优异的耐蚀性能,这主要归因于低的第二相体积分数和细小的晶粒尺寸。

关键词(KeyWords)： 生物镁合金;固溶处理;Mg3YZn6准晶相;微观组织;腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51574175,51474153)

作者(Author): 孙毅,张文鑫,许春香,张金山,韩少兵,贾长建

DOI: 10.13289/j.issn.1009-6264.2017-0127

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