Characterization of Cu-Zn Alloy Nanocrystalline Powders Prepared by Wire Electrical Explosion  

作　　者：WANG Qun YANG Hai-Bin GUO Wei-Li ZOU Guang-Tian 王群;杨海滨;郭伟力;邹广田(National Laboratory of Superhard Materials,Jilin University,Changchun 130023)

机构地区：[1]National Laboratory of Superhard Materials,Jilin University,Changchun 130023

出　　处：《Chinese Physics Letters》2000年第2期145-147,共3页中国物理快报（英文版）

摘　　要：Nanocrystalline powders of Cu-Zn alloy in size ranging from 10 to 140nm was prepared from α-Cu-Zn alloy wire containing 39.8at.% Zn by an electrical explosion method. The particles are identified from x-ray diffraction as a mixture of the α,β,γ, and ε phases of Cu-Zn alloy. Most of the particles are hexagonal in shape, with only a small part being spherical and cubic. The composition of Zn in the explosion products varied from 6.9 to 45.2 at.% in different particles as determined by energy dispersive x-ray spectrometer. A possible mechanism for the formation of the alloy nanocrystalline powders is proposed, in which a redistribution process occurred caused by strong collision and diffusion between the two kinds of atoms during the powder formation.

关 键 词：ALLOY POWDERS HEXAGONAL 

分 类 号：TG1[金属学及工艺—金属学]