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Porosity and microstructure control of porous ceramics by partial hot pressing

Published online by Cambridge University Press:  31 January 2011

Jian-Feng Yang ,
Guo-Jun Zhang  and
Tatsuki Ohji
Jian-Feng Yang
Affiliation:
Japan Science and Technology Corporation (JST), Nagoya 463–8687, Japan
Guo-Jun Zhang
Affiliation:
Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463–8687, Japan
Tatsuki Ohji
Affiliation:
Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463–8687, Japan
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Abstract

Precise control of porosity and microstructure of porous ceramics is essential. This paper describes a method for the preparation of porous ceramics with porosity from 0.0 to 0.4. The ceramics were prepared via hot pressing a powder mixture to a definite dimension, and the porosity was easily adjusted by the powder amount. As examples, porous Si3N4 or SiC ceramics were produced by powder mixtures that contained Si3N4 or SiC and a sintering additive of oxide. It was demonstrated that the present method is advantageous for producing ceramics with controllable porosity and microstructure.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 7 , July 2001 , pp. 1916 - 1918
Copyright
Copyright © Materials Research Society 2001

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References

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