한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)
- 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
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- Pages.282-283
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- 2006
Densification Behavior and Microstructural Development of Nano-agglomerate Powder during Singering
- Kang, Yun-Sung (Department of Metallurgy and Materials Science, Hanyang University) ;
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Cha, Berm-Ha
(Department of Metallurgy and Materials Science, Hanyang University)
;
- Kang, Hyun-Goo (Department of Metallurgy and Materials Science, Hanyang University) ;
- Lee, Jai-Sung (Department of Metallurgy and Materials Science, Hanyang University)
- 발행 : 2006.09.24
초록
Densification behavior of nano-agglomerate powder during pressureless sintering of Fe-Ni nanopowder was investigated in terms of diffusion kinetics and microstructural development. To understand the role of agglomerate boundary for sintering process, densification kinetics of Fe-Ni nano-agglomerate powder with different agglomerate size was investigated. It was found that activation energy for densification was lower in the small-sized agglomerate powder. The increase in the volume fraction of inter-agglomerate boundary acting as high diffusion path might be responsible for the enhanced diffusion process.