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Characterization of Cu-Zn Alloy Nanocrystalline Powders Prepared by Wire Electrical Explosion |
| WANG Qun;YANG Hai-Bin;GUO Wei-Li;ZOU Guang-Tian |
| National Laboratory of Superhard Materials, Jilin University, Changchun 130023 |
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| Cite this article: |
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WANG Qun, YANG Hai-Bin, GUO Wei-Li et al 2000 Chin. Phys. Lett. 17 145-147 |
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Abstract 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 45.2at.% 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.
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| Keywords:
81.20.-n
64.70.-p
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Published: 01 February 2000
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| PACS: |
81.20.-n
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(Methods of materials synthesis and materials processing)
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64.70.-p
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(Specific phase transitions)
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