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Microwave Processing of Ceramics: Guidelines Used at the Oak Ridge National Laboratory

Published online by Cambridge University Press:  25 February 2011

Mark A. Janney ,
Hal D. Kimrey  and
James O. Kiggans
Mark A. Janney
Affiliation:
Oak Ridge National Laboratory P.O. Box 2008 Oak Ridge, Tennessee 37831-6087
Hal D. Kimrey
Affiliation:
Oak Ridge National Laboratory P.O. Box 2008 Oak Ridge, Tennessee 37831-6087
James O. Kiggans
Affiliation:
Oak Ridge National Laboratory P.O. Box 2008 Oak Ridge, Tennessee 37831-6087
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Abstract

To make meaningful comparisons between conventional and microwave processing of materials, one must conduct experiments that are as similar as possible in the two environments. Particular attention must be given to thermal conditions, sample parameters, and furnace environment. Under thermal conditions, one must consider temperature measurement (pyrometer or thermocouple, sheath type, and arcing of thermocouples), thermal history (heating and cooling rates, thermal gradients), and exothermic reactions. Regarding sample parameters, one must. consider sample size, and packing powders and insulation systems. With respect to furnaces, one must consider differences in atmosphere, impurities, and uniformity of heating. Examples will be drawn from diffusion, grain growth, sintering, nitridation, and drying experiments conducted at the Oak Ridge National Laboratory (ORNL) over the past six years.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 269: Symposium L – Microwave Processing of Materials III , 1992 , 173
Copyright
Copyright © Materials Research Society 1992

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References

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