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Sintering of AIN Powder Compacts

Published online by Cambridge University Press:  21 February 2011

M. Akaishi  and
Y. Horie
M. Akaishi
Affiliation:
National Institute for Research in Inorganic Materials, Ibaraki, Japan
Y. Horie
Affiliation:
North Carolina State University, Raleigh, North Carolina
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Abstract

Pure-AIN powder compacts have been fabricated by isostatic pressing and impact forming in the pressurs range of 1.5 ˜ 5.5 GPa. The density of these compacts was in the range of 70 ˜ 90% of the theoretical. The mean particle size was reduced from 20 μm to a few micron meters depending on compaction pressures. The density changes observed after sintering at temperatures above 1,600°C were independent of initial starting densities. A similar shrinkage was observed when residual strains were eliminated by annealing at 1,550°C for 30 min. Micro-structures of the sintered specimens showed a mixed region of either extensive grain growth or little growth.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 24: Symposium B – Defect Properties and Processing of High-Technology Nonmetallic Materials , 1983 , 319
Copyright
Copyright © Materials Research Society 1984

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References

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