Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
권호 표지

Densification Behavior and Microstructural Development of Nano-agglomerate Powder during Singering

  • Kang, Yun-Sung (Department of Metallurgy and Materials Science, Hanyang University) ;
  • 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)
  • Published : 2006.09.24
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords