Browse > Article
http://dx.doi.org/10.4150/KPMI.2008.15.4.271

Sintering Behavior of Fe Nanopowder Agglomerates Prepared by Pressureless Compaction  

You, Woo-Kyung (Department of Metallurgy and Materials Science, Hanyang University)
Jung, Sung-Soo (Department of Metallurgy and Materials Science, Hanyang University)
Lee, Jai-Sung (Department of Metallurgy and Materials Science, Hanyang University)
Publication Information
Journal of Powder Materials / v.15, no.4, 2008 , pp. 271-278 More about this Journal
Abstract
Sintering behavior of iron nanopowder agglomerate compact prepared by slurry compaction method was investigated. The Fe nanopowder agglomerates were prepared by hydrogen reduction of spray dried agglomerates of ball-milled $Fe_2O_3$ nanopowder at various reduction temperatures of $450^{\circ}C$, $500^{\circ}C$ and $550^{\circ}C$, respectively. It was found that the Fe nanopowder agglomerates produced at higher reduction temperature have a higher green density compact which consists of more densified nanopowder agglomerates with coarsed nanopowders. The sintering behavior of the Fe nanopowder agglomerates strongly depended on the powder packing density in the compact and microstructure of the agglomerated nanopowder. It was discussed in terms of two sintering factors affecting the entire densification process of the compact.
Keywords
Nanopowder agglomerate; Pressureless slurry compaction; Sintering;
Citations & Related Records
연도 인용수 순위
  • Reference
1 P. Knorr, J. G. Nam and J. S. Lee: Metall. and Mater. Trans. A, A31 (2002) 503   DOI
2 G. Petzow and H. E. Exner: Z. Metallkd, 67 (1976) 611
3 J. S. Lee, W. A. Kaysser and G. Petzow: Modern Development in Powder Metallurgy, 15 (1985) 489
4 J. S. Lee, H. G. Kang and Y. S. Kang: To be printed in the Proceedings of World Congress on PM 2008, MPIF, Washington D.C, 2008
5 R. M. German: Particle Packing Characteristics, MPIF, Princeton, NJ, (1989) 141
6 K. Ridgway and K. J. Tarbuck: Chemical and Process Engineering, 49(2) (1968) 103
7 N. Epstein and M. J. Young: Nature, 196 (1962) 885   DOI
8 Y. S. Kang, B. H. Cha, H. G. Kang and J. S. Lee: Mater. Sci. Forum, 534 (2007) 505   DOI
9 S. V. Divinski, F. Hisker, Y. S. Kang, J. S. Lee and Chr. Herzig: Z. Metallkd., 93 (2002) 256   DOI
10 S. V. Divinski, F. Hisker, Y. S. Kang, J. S. Lee and Chr. Herzig: Interface Sci., 11 (2003) 67   DOI   ScienceOn
11 J. S. Lee and Y. S. Kang: Scripta Mater., 44 (2001) 1591   DOI   ScienceOn
12 G. D. Scott and G. J. Kovacs: J. Physics D: Applied Physics, 6 (1973) 1007   DOI   ScienceOn
13 S. V. Divinski, F. Hisker, Y. S. Kang, J. S. Lee and Chr. Herzig: Z. Metallkd., 93 (2002) 265   DOI