비가압 성형한 Fe 나노분말응집체의 소결거동
Sintering Behavior of Fe Nanopowder Agglomerates Prepared by Pressureless Compaction
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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 Fe₂O₃ nanopowder at various reduction temperatures of 450℃, 500℃ and 550℃, 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.
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 Fe₂O₃ nanopowder at various reduction temperatures of 450℃, 500℃ and 550℃, 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.
참고문헌 (13)
- P. Knorr, , Metall. and Mater .Trans. A, A31, pp.503~ (2002)
- J. S. Lee, , Scripta Mater, 44, pp.1591~ (2001)
- Y. S. Kang, , Mater. Sci. Forum, 통권 : 534, pp.505~ (2007)
- S. V. Divinski, , Z. Metallkd, 93, pp.256~ (2002)
- S. V. Divinski, , Z. Metallkd, 93, pp.265~ (2002)
- S. V. Divinski, , Interface Sci, 11, pp.67~ (2003)
- G. Petzow, , Z. Metallkd, 67, pp.611~ (1976)
- J. S. Lee, , Modern Development in Powder Metallurgy, 15, pp.489~ (1985)
- J. S. Lee, "To be printed in the Proceedings of World Congress on PM 2008", MPIF (2008)
- R. M. German, "Particle Packing Characteristics", pp.141~ (1989), MPIF
- K. Ridgway, , Chemical and Process Engineering, 49(2), pp.103~ (1968)
- N. Epstein, , Nature, 196, pp.885~ (1962)
- G. D. Scott, "Applied Physics", J. Physics D, 6, pp.1007~ (1973)