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Sintering Process and Mechanical Properties for Oxide-Based Nanocomposites

Published online by Cambridge University Press:  25 February 2011

Koichi Niihara ,
Atsushi Nakahira  and
Masahiro Inoue
Koichi Niihara
Affiliation:
The Insititute of Scientific and Industrial Research, Osaka University, 8–1, Mihogaoka, Ibaraki, Osaka 567, Japan.
Atsushi Nakahira
Affiliation:
The Insititute of Scientific and Industrial Research, Osaka University, 8–1, Mihogaoka, Ibaraki, Osaka 567, Japan.
Masahiro Inoue
Affiliation:
The Insititute of Scientific and Industrial Research, Osaka University, 8–1, Mihogaoka, Ibaraki, Osaka 567, Japan.
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Abstract

Oxide-based Al2O3/SiC nanocomposites, in which the nanometer-sized nonoxide SiC particles are dispersed mainly within the matrix Al2O3 grains, were fabricated by the normal powder metallurgical methods. High resolution transmission electron microscopic observation showed that the nanometer sized SiC particles were directly bonded to the matrix Al2O3 grain without any reacting layers. The nano-sized SiC dispersions gave the significant improvement of mechanical properties such as fracture strength over 1000 MPa and no degradation of its strength up to 1000°C for Al2O3/SiC nanocomposites, was observed. The sintering process and the correlation between mechanical properties and micro/nanostructure will be discussed for this nanocomposite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 589
Copyright
Copyright © Materials Research Society 1992

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References

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