韩召,朱鸿民

• 1:安徽工业大学冶金与资源学院
• 2:北京科技大学冶金与生态工程学院

摘要(Abstract)：

利用两步法制备得到纳米金属镍粉末。首先以氯化镍为原料在钠-氨溶液内通过还原-氮化反应制备得到纳米氮化镍粉末,然后通过真空热分解成功制备出纳米尺度的金属镍粉末。研究表明:钠-氨溶液内制备得到的纳米氮化镍粉末为六方结构,其平均晶粒尺度为19 nm;在300℃条件下进行真空热处理后,纳米氮化镍粉末完全分解,获得立方结构的纳米金属镍粉末,其平均晶粒尺度为21.4 nm,比表面积为30.5 m2·g-1;在300~700℃真空热处理过程中,纳米金属镍粉末的平均晶粒尺度增大为36.8 nm,比表面积减小为13.2 m2·g-1。

关键词(KeyWords)： 镍;粉末金属;氨;合成;还原

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51372255);; 安徽高校省级自然科学研究项目(KJ2012A046)

作者(Author): 韩召,朱鸿民

DOI: 10.13289/j.issn.1009-6264.2014.06.004

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