- Densification of Al2O3 Nanopowder by Magnetic Pulsed Compaction and Their Properties
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R.C. Kang, M.K. Lee, W.W. Kim, C.K. Rhee, S.J. Hong
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J Korean Powder Metall Inst. 2008;15(1):37-45.
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DOI: https://doi.org/10.4150/KPMI.2008.15.1.037
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- This article presents the challenges toward the successful consolidation of Al_2O_3 nanopowder using magnetic pulsed compaction (MPC). In this research the ultrafine-structured Al_2O_3 bulks have been fabricated by the combined application of magnetic pulsed compaction (MPC) and subsequent sintering, and their properties were investigated. The obtained density of Al_2O_3 bulk prepared by the combined processes was increased with increasing MPC pressure from 0.5 to 1.25 GPa. Relatively higher hardness and fracture toughness in the MPCed specimen at 1.25 GPa were attributed to the retention of the nanostructure in the consolidated bulk without cracks. The higher fracture toughness could be attributed to the crack deflection by homogeneous distribution and the retention of nanostructure, regardless of the presence of porosities. In addition, the as consolidated Al_2O_3 bulk using magnetic pulsed compaction showed enhanced breakdown voltage.
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Citations
Citations to this article as recorded by  - Microstructure and Characteristics of Ag-SnO2Contact Materials Prepared by Magnetic Pulsed Compaction
J.S. Park, Y.J. Kim, M.H. Lee, H.S. Lee, S.J. Hong, J.K. Lee
Journal of Korean Powder Metallurgy Institute.2011; 18(4): 372. CrossRef - The Effect of Ti Powder addition on Compaction Behavior of TiO2Nano Powder
Jin-Sub Park, Hyo-Seob Kim, Ki-Seok Lee, Jeong-Goo Lee, Chang-Kyu Rhee, Soon-Jik Hong
Journal of Korean Powder Metallurgy Institute.2009; 16(3): 223. CrossRef
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