Fabrication of High Density Y2O3 Ceramics by Magnetic Pulsed Compaction

Jong Keuk Lee; Sung Jei Hong; Min Ku Lee; Jung G. Lee; Chang Kyu Rhee; S.J. Jeong; J.S. Park; J.S. Park

doi:10.4028/www.scientific.net/SSP.119.175

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HomeSolid State PhenomenaSolid State Phenomena Vol. 119Fabrication of High Density Y2O3 Ceramics by...

Fabrication of High Density Y₂O₃ Ceramics by Magnetic Pulsed Compaction

Abstract:

Highly dense Y2O3 ceramics have been fabricated by a magnetic pulsed compaction (MPC) which is capable of reaching a sufficiently high pressure (~1GPa) in a very short duration (a few microseconds), and a subsequent pressureless sintering at 1600°C. The Y2O3 green bodies with a relative density of about 68% were achieved by the application of the MPC process due to the effect of an enhanced rearrangement and a high speed movement of the particles, without the help of ceramic binder. Those compacts showed densities greater than 95%, which is very close to the theoretical density, after the subsequent pressureless sintering process at 1600 oC. The shrinkage rates of the diameter for the samples compacted by the MPC process were markedly reduced, when compared to those for the ones by the conventional compaction (CC) process.

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Periodical:

Solid State Phenomena (Volume 119)

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175-178

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.119.175

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Online since:

January 2007

Authors:

Jong Keuk Lee, Sung Jei Hong, Min Ku Lee, Jung G. Lee, Chang Kyu Rhee, S.J. Jeong, J.S. Park, J.S. Park

Keywords:

Hardness, Magnetic Pulsed Compaction (MPC), Relative Density, Shrinkage, Y₂O₃

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