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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

REFERENCES

1.Internal communication.Google Scholar
2. Stuchly, M.A., Stuchly, S.S., “Coaxial Une Reflection Method for Measuring Dielectric Properties of Materials at Radio and Microwave Frequencies-A Review”, IEEE Trans., Vol. IM–29(3), 176,1980.Google Scholar
3. Buideve, E.C., Cain, F.L., Seal, J., “Measurement of Radio Frequency Permittivity of Biological Tissues with an Open Ended Coaxial Line: Part 1”, IEEE Trans., Microwave Theory Tech., MTT–30, 82, 1980.Google Scholar
4. Patterson, M.C.L., Apte, P.S., Kimber, R.M., and Roy, R., Enersearch Report #600049, “Microwave Heating for Ceramic Joining”.Google Scholar
5. Klug, H.P., Alexandre, L.E., “X-Ray Diffraction Procedures for Polycrystalline and Amorphous Materials”, John Wiley & Sons, 2nd Ed., pp. 700–704, 1975.Google Scholar
6. Metaxas, A.C., Meredith, R.J., “Industrial Microwave Heating”, Peter Peregrimus Ltd., p. 80, 1983 Google Scholar
7. Nelson, S., Kraszewoki, A., You, T., “Solid and Particulate Material Permittivity Relationships”, Journal of Microwave Power and Electromagnetic Energy, Vol. 26, #1, p. 45, 1991.Google Scholar