程军权,周一文,王红星,张炎,许殷泽,赵贵崔,顾沈逸,丁仁旻,蒋兖卿

• 1:南京工程学院材料科学与工程学院
• 2:江苏省先进结构材料与应用技术重点实验室

摘要(Abstract)：

采用金属型铸造的方法制备了Zn-1.5Cu-1.2Mg-0.2Zr锌合金，利用扫描电镜、能谱仪、X射线衍射、电化学工作站和浸泡实验等研究了不同温度时效处理对其微观组织和耐蚀性的影响。结果表明：铸态锌合金的微观组织主要由η相(含Cu的Zn固溶体)、η+Mg_2Zn_(11)共晶体和少量的Zn-Zr化合物组成；随时效温度的升高，合金η相晶粒内析出的片状第二相数量先增加后减少，腐蚀速率呈先降低后增加的趋势；220℃时效处理的锌合金腐蚀速率最小，自腐蚀电流密度和模拟体液浸泡腐蚀速率分别为5.23μA·cm~(-2)和0.053 mm·year~(-1),这可能是由于220℃时效处理后合金η相晶粒内析出的片状第二相的数量最多且分布均匀。

关键词(KeyWords)： Zn-1.5Cu-1.2Mg-0.2Zr锌合金;时效温度;腐蚀速率

Abstract:

Keywords:

基金项目(Foundation): 江苏省大学生创新创业训练项目(202211276134H);; 南京工程学院大学生科技创新基金项目(TB20222052);; 江苏高校优秀科技创新团队

作者(Author): 程军权,周一文,王红星,张炎,许殷泽,赵贵崔,顾沈逸,丁仁旻,蒋兖卿

DOI: 10.13289/j.issn.1009-6264.2022-0448

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