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The Effect of Particle Size on Microwave Heated Carbon and the Subsequent Crystallite Growth

Published online by Cambridge University Press:  25 February 2011

Claude P. Lorenson ,
Mark C.L. Patterson ,
Gail Risto  and
Robert Kimber
Claude P. Lorenson
Affiliation:
Alcan International Limited, Kingston Research and Development Centre, P.O. Box 8400, Kingston, Ontario, CanadaK7L 5L9
Mark C.L. Patterson
Affiliation:
Alcan International Limited, Kingston Research and Development Centre, P.O. Box 8400, Kingston, Ontario, CanadaK7L 5L9
Gail Risto
Affiliation:
Alcan International Limited, Kingston Research and Development Centre, P.O. Box 8400, Kingston, Ontario, CanadaK7L 5L9
Robert Kimber
Affiliation:
Alcan International Limited, Kingston Research and Development Centre, P.O. Box 8400, Kingston, Ontario, CanadaK7L 5L9
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Abstract

The dielectric properties of carbon imply that heating with microwave energy should not be significant at elevated temperatures. It has been demonstrated, however, that temperatures in excess of 1900°C can be achieved with low powers. The effect of particle size on the heating rate will be presented and a heat absorption mechanism is postulated to explain the high temperatures observed.

Under controlled conditions, conventional and microwave heating has been used to observe growth of the carbon crystallite size up to a temperature of 1400°C. Under these conditions, no enhanced crystal growth was observed for microwave heating.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 269: Symposium L – Microwave Processing of Materials III , 1992 , 129
Copyright
Copyright © Materials Research Society 1992

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References

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