A new approach to synthesize core-shell nanosized Ni/Al composite powder

被引：0
|
作者：
Cheng Zhipeng [1 ]
Li Fengsheng [1 ]
Yang Yi [1 ]
Yang Yonglin [1 ]
Liu Xiaodi [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Natl Special Superfine Powder Engn Res Ctr, Nanjing 210094, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷 / 04期
关键词：
nanosized particle; Ni/Al powder; core-shell structure; oxidation resistance; preparation;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A kind of novel core-shell nanosized Ni/Al composite powder was prepared by displacement reductior method, in which nano-sized Ni was deposited on the surface of micron-sized aluminum powder. This reaction happened under the existence of agent-fluoride. The preparation method and reaction mechanism have been discussed. The microstructure and morphology of the composite powder were investigated by SEM,, XRD, BET and XPS. The analysis results show that this method can prepare the compact shell for Ni/Al powders. Nickel crystallites with average size of 20.4 nm were coated on the surfaces of Al powder with average size of 7.13 mu m uniformly and continuosly to form shell structure.
引用
收藏
页码：713 / 716
页数：4
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