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Nanoparticulate coating of functional ceramics by the vapor, solid and liquid phase reactions

Published online by Cambridge University Press:  10 February 2011

M. Awano ,
T. Kameyama ,
M. Sando  and
Y. Kuwahara
M. Awano
Affiliation:
National Industrial Research Institute of Nagoya, Nagoya 462 JAPAN
T. Kameyama
Affiliation:
National Industrial Research Institute of Nagoya, Nagoya 462 JAPAN
M. Sando
Affiliation:
National Industrial Research Institute of Nagoya, Nagoya 462 JAPAN
Y. Kuwahara
Affiliation:
National Industrial Research Institute of Nagoya, Nagoya 462 JAPAN
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Abstract

Microstructure control of ceramics is expected to produce novel functions or to improve properties. Nanocomposite powders of functional ceramics were fabricated by vapor, solid and liquid phase reactions, respectively. Superconducting bulk materials were fabricated by thermal plasma method and mist pyrolysis method. Microstructure control of powders for sintering contributed to improve the microstructure at grain boundaries and to introduce magnetic flux pinning centers, both resulted in the improvement of superconducting transport current property. On the other hand, a magnetic nanocomposite for the remote sensing of stress in structural ceramics was fabricated by sol-gel method and solid state reaction. Successfully introduced nano-dispersoids of ferromagnetic materials by the sintering of nanocomposite powders resulted in the harmonization of added functionality and proper mechanical properties. Magnetic response to applied stress in structural ceramic matrix was detected as the result of amplified magnetostriction caused by the nano-size effect on ferromagnetic dispersoids.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 501: Symposium FF – Surface Controlled Nanoscale Materials for High-Added… , 1997 , 339
Copyright
Copyright © Materials Research Society 1998

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References

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