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Microwave Sintering Technology for the Production of Metal Oxide Varistors

Published online by Cambridge University Press:  28 February 2011

G. McMahon ,
A. Pant ,
R. Sood ,
A. Ahmas  and
R.T. Holt
G. McMahon
Affiliation:
Ceramics Kingston Inc., P.O. Box 655, Kingston, Ontario, Canada K7L 4X1
A. Pant
Affiliation:
Ceramics Kingston Inc., P.O. Box 655, Kingston, Ontario, Canada K7L 4X1
R. Sood
Affiliation:
Ceramics Kingston Inc., P.O. Box 655, Kingston, Ontario, Canada K7L 4X1
A. Ahmas
Affiliation:
Ceramic Section, EM&R/CANMET, 405 Rochester St., Ottawa, Ontario, Canada KIA OGI
R.T. Holt
Affiliation:
National Aeronautical Establishment, NRC, Building M-13, Montreal Rd., Ottawa, Ontario, Canada KlA 0R6
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Abstract

A microwave sintering technology has been developed for the production of metal oxide varistors. The electrical properties (leakage current and non-linearity coefficient) of the microwave sintered devices were found to be comparable to those obtained for conventionally sintered varistors of identical composition. Additionally, the reference voltages were greater (by a factor of two) and the biaxial moduli of rupture were higher for the microwave sintered specimens. These differences have been attributed to the smaller grain size associated with the microwave sintered specimens.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 189: Symposium L – Microwave Processing of Materials II , 1990 , 237
Copyright
Copyright © Materials Research Society 1991

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References

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