周琦,吴海涛,贾建刚,臧树俊

• 1:兰州理工大学甘肃省有色金属新材料重点实验室

摘要(Abstract)：

采用真空熔炼,快速凝固与去合金化相结合的方法制备纳米多孔镍,用XRD、SEM、EDS分析试样的相组成及形貌,研究多层次纳米孔的形成机制及不同工艺对其结构的影响。结果表明:快速凝固可制备晶粒均匀、细小的理想前驱体Ni30Al70合金,经去合金化可获得由100～300 nm大骨架及孔径尺寸10 nm的蜂窝状多孔结构共同构成的纳米多孔镍。NiAl3和Ni2Al3两相腐蚀的协同作用对新颖多层次纳米多孔镍结构的形成有重要影响。最佳去合金化温度65℃,最佳溶液浓度25%。

关键词(KeyWords)： 去合金化;纳米多孔镍;快速凝固;Ni-Al合金;多层次结构

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51001057);; 国家级大学生创新创业训练计划(201210731012)

作者(Author): 周琦,吴海涛,贾建刚,臧树俊

DOI: 10.13289/j.issn.1009-6264.2013.08.003

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