Fabrication and Characteristics of Hypereutectic Prealloyed Al-Si Powders by Gas Atomization Process |
| Journal |
Key Engineering Materials (Volumes 317 - 318) |
| Volume |
The Science of Engineering Ceramics III |
| Edited by |
T. Ohji, T. Sekino and K. Niihara |
| Pages |
61-64 |
| DOI |
10.4028/www.scientific.net/KEM.317-318.61 |
| Online since |
August, 2006 |
| Authors |
Yong Jin Kim,
L.F. Wang,
In Sang Chung,
Jin Chun Kim,
Tae Suk Jang
|
| Keywords |
Compacting Ability, Gas Atomization, Hot Pressing, Hypereutectic Al-Si |
| Abstract |
The hypereutectic prealloyed Al-Si powders were prepared by gas atomization process.
The microstructure and compacting ability of the atomized Al-Si powders were investigated. With
increasing the gas pressure of the atomization, the average powder size and oxygen content were
decreased. The size of primary eutectic Si particles in the as-atomized powders was about 8~10.
As-atomized powders were hot-pressed into a cylindrical shape. Relative density of the hot-pressed
samples was achieved about 96~99 % of theoretical density. Some properties of the samples were
evaluated in this paper. |
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