Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5348314 | Applied Surface Science | 2015 | 5 Pages |
Abstract
Spherical Cu-Zn alloy powders were fabricated by combining the surface tension of a molten metal with the de-wetting of a metal droplet on a graphite surface. The effect that the gas pressure had on the surface morphology and composition was studied. The Zn concentration can be maintained at 20.18Â wt.%, 15.5Â wt.% and 12.08Â wt.% using 0.22Â MPa, 0.10Â MPa, and 0.04Â MPa, respectively, from a commercially available Cu-38Â wt.%Zn raw material. The gas pressure was adjusted to control the surface volatility of Zn without affecting the spherical morphology, and higher gas pressure yielded less volatile Zn. The Cu-Zn alloy powders were perfectly spherical, even at a negative pressure of 0.04Â MPa. The spherical Cu-Zn alloy particles hardly changed and were fully dense up to Cu-50Â wt.%Zn, which allowed high-quality spherical Cu-Zn alloy powders to potentially serve a large composition range.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Chenglong Lei, Haifu Huang, Zhenzhi Cheng, Shaolong Tang, Youwei Du,