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Porous Alumina by Hot Isostatic Pressing

Published online by Cambridge University Press:  15 February 2011

Anatolijs Kuzjukevics  and
K. Ishizaki
Anatolijs Kuzjukevics
Affiliation:
Institue of Inorganic Chemistry of the Latvian Academy of Science, Salaspils, Latva
K. Ishizaki
Affiliation:
Nagaoka Univesity of Technology, Department of Mechenical Engineeing, Nagaoka, 940–21 Japan
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Abstract

Production of porous alumina ceramics by capsule-free hot isostatic pressing of bimodally distributed alumina powders with a large size difference (>10) and reaction sintering of alumina powder and boron oxide formed by oxidation of boron nitride during sintering were investigated. The influence of the composition of bimodally distributed alumina and alumina-boron nitride mixture of powders on open and closed porosity was studied.

HIP treatment at 1600°C provided sintering of only fine-grained powder. A small loss in open porosity (about 4%) is observed with increasing of the fine powder weight fraction up to 0.4.

Reaction sintering of a fine-grained alumina powder with boron oxide gives significant (about 30%) increase of open porosity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 251: Symposium S – Pressure Effects on Materials Processing and Design , 1991 , 121
Copyright
Copyright © Materials Research Society 1992

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References

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