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

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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The Effect of Pre-compaction on Density and Mechanical Properties of Magnetic Pulsed and Sintered $Al_2O_3$ Bulk

  • Hong, S.J. (Division of Advanced Materials Engineering, Kongju National University) ;
  • Lee, J.K. (Nuclear Nano Materials Development Lab. Korea Atomic Energy Research Institiute) ;
  • Lee, M.K. (Nuclear Nano Materials Development Lab. Korea Atomic Energy Research Institiute) ;
  • Kim, W.W. (Nuclear Nano Materials Development Lab. Korea Atomic Energy Research Institiute) ;
  • Rhee, C.K. (Nuclear Nano Materials Development Lab. Korea Atomic Energy Research Institiute)
  • Published : 2006.09.24
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Abstract

This research reports for the successful consolidation of $Al_2O_3$ powder with retained ultra-fine structure using MPC and sintering. Measurements in the consolidated $Al_2O_3$ bulk indicated that hardness, fracture toughenss, and breakdown voltage have been much improved relative to the conventional polycrystalline materials. Finally, optimization of the compaction parameters and sintering conditions will lead to the consolidation of $Al_2O_3$ nanopowder with higher density and even further enhanced mechanical properties.

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