王志刚,姚美意,张骏,孙风涛,黄娇,张金龙,周邦新,李强

• 1:上海大学微结构重点实验室
• 2:上海大学材料研究所

摘要(Abstract)：

利用堆外静态高压釜实验研究了Zr-1Nb-x Ge-yBi(x=0.05-0.1,y=0.2-0.4,质量分数,%)合金在400℃/10.3 MPa过热蒸汽和360℃/18.6 MPa去离子水中的耐腐蚀性能,利用高分辨透射电镜(HRTEM)和高分辨扫描电镜(HRSEM)研究了合金和合金腐蚀后氧化膜的显微组织。结果表明,合金中只存在β-Nb、Zr Nb Fe型和Zr3Ge 3种第二相;在Zr-1Nb合金中复合添加Ge和Bi可明显提高合金的耐腐蚀性能,其中Zr-1Nb-0.05Ge-0.3Bi合金的耐腐蚀性能相对较好,优于单独添加Ge的Zr-1Nb-0.05Ge合金和单独添加Bi的Zr-1Nb-0.3Bi合金。这进一步说明固溶在α-Zr中的Ge和Bi确实是改善Zr-1Nb-x Ge-yBi合金耐腐蚀性能的主要原因。

关键词(KeyWords)： Zr-1Nb;Ge/Bi;第二相;显微组织;耐腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51471102,51271104)

作者(Author): 王志刚,姚美意,张骏,孙风涛,黄娇,张金龙,周邦新,李强

DOI: 10.13289/j.issn.1009-6264.2016.10.019

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