Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)
- 2006.09a
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- Pages.284-285
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- 2006
Preparation and Sintering Behavior of Fe Nanopowders Produced by Plasma Arc Discharge Process
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Choi, Chul-Jin
(Center for powder materials research, Korea Institute of Machinery and Materials) ;
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Yu, Ji-Hun
(Center for powder materials research, Korea Institute of Machinery and Materials)
- Published : 2006.09.24
Abstract
The nano-sized Fe powders were prepared by plasma arc discharge process using pure Fe rod. The microstructure and the sintering behavior of the prepared nanopowders were evaluated. The prepared Fe nanopowders had nearly spherical shapes and consisted of metallic core and oxide shell structures. The higher volume shrinkage at low sintering temperature was observed due to the reduction of surface oxide. The nanopowders showed 6 times higher densification rate and more significant isotropic shrinkage behavior than those of micron sized Fe powders.