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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 9    No. 4    December 1999

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Reduction reaction in Al-CuO powder mixturedriven by mechanical alloying
Wu Jinming(吴进明); Zheng Shilie(郑史烈); Li Zhizhang(李志章); Wu Nianqiang(吴年强)

Department of Materials Science and Engineering; Zhejiang University; Hangzhou 310027; P. R. China

Abstract:The solid state reduction reaction of Al-10 % CuO mixed powders during mechanical alloying was investigated using XRD, DTA and TEM. The CuO is believed to be gradually reduced by Al, and controlled by diffusion of atoms and ions. Reduced Cu spontaneously reacts with Al to form a metastable equilibrium of Al (Cu) with Al4Cu9 phase during ball-milling, instead of CuAl2 and Al(Cu), which is only observed after annealing.

 

Key words:  solid state reaction; mechanical alloying; phase transformation

ISSN 1672-7029
CN 43-1423/U

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