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Fiber Dispersed Porous Alumina Sintered under Direct High Gas Pressure for High Thermal Shock Resistant Application

Published online by Cambridge University Press:  15 February 2011

Toyokazu Kurushima ,
K. Ishizaki  and
S. Osaki
Toyokazu Kurushima
Affiliation:
Central Research Laboratory, INAX corporation, Tokoname, Aichi 479, Japan
K. Ishizaki
Affiliation:
Nagaoka University of Technology, Department of Material Science and Engineering, School of Mechanical Engineering, Nagaoka, Niigata 940-21, Japan
S. Osaki
Affiliation:
Nagaoka University of Technology, Department of Material Science and Engineering, School of Mechanical Engineering, Nagaoka, Niigata 940-21, Japan
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Abstract

Fiber dispersed porous alumina ceramics were produced by a direct high gas pressure sintering method. The produced materials exhibited relative densities of 75–85%, high bending strength and good thermal shock resistance. The alumina ceramics were characterized by lower closed porosity and higher open porosity. These characters strengthen the thermal shock resistance of porous ceramics. This high gas pressure sintering by the direct high gas pressure sintering method densifies only bridge parts of alumina ceramics which support pores. This process is concluded to be effective to produce materials with higher strength, better thermal shock resistance and higher open porosity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 251: Symposium S – Pressure Effects on Materials Processing and Design , 1991 , 141
Copyright
Copyright © Materials Research Society 1992

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References

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