Hostname: page-component-54dcc4c588-sq2k7 Total loading time: 0 Render date: 2025-10-03T02:48:52.875Z Has data issue: false hasContentIssue false
  • English
  • Français

Theory of Microwave Effects on Atomic Diffusion in Sintering: Basic Considerations of The Phenomenon of Thermal Runaway

Published online by Cambridge University Press:  28 February 2011

V. M. Kenkre ,
L. Skala ,
M. W. Weiser  and
J. D. Katz
V. M. Kenkre
Affiliation:
Center for Micro-Engineered Ceramics and Department of Physics, University of New Mexico, Albuquerque, NM 87131
L. Skala
Affiliation:
Center for Micro-Engineered Ceramics and Department of Physics, University of New Mexico, Albuquerque, NM 87131
M. W. Weiser
Affiliation:
Center for Micro-Engineered Ceramics and Mechanical Engineering Department, University of New Mexico, Albuquerque, NM 87131
J. D. Katz
Affiliation:
Los Alamos National Laboratory, Los Alamos, NM 87475
Get access

Abstract

We present the results of our recent studies of the possible origin of the reported increase in sintering efficiency brought about by the application of microwaves. We study the phenomenon of thermal runaway in ceramic materials undergoing microwave heating and present a theory on the basis of a simple temperature-time equation. The nonlinear evolution inherent in the equation arises naturally from physical considerations. The theory isapplied to experimental observations reported on several different materials including silica, alumina, strontium titanate, zinc oxide and iron oxide, and shown to be in good agreement with the data.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 189: Symposium L – Microwave Processing of Materials II , 1990 , 179
Copyright
Copyright © Materials Research Society 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1 Sheppard, L.M., Am. Ceram. Soc. Bull., 67, 1656–71 (1988)Google Scholar
2 Bruce, R.W., in Microwave Processing of Materials, edited by Sutton, W.H., Brooks, M.H., and Chabinsky, I.J., (Mater. Res. Soc. Proc., 124, Pittsburgh, PA 1988) pp. 3–15 Google Scholar
3 Katz, J.D., Blake, R.D., Petrovic, J.J. and Sheinberg, H., in Microwave Processing of Materials, edited by Sutton, W.H., Brooks, M.H., and Chabinsky, I.J., (Mater. Res. Soc. Proc., 124, Pittsburgh, PA 1988) pp. 219–26Google Scholar
4 Varadan, V.K., Ma, Y., Lakhtakia, A. and Varada, V.V., in Microwave Processing of Materials, edited by Sutton, W.H., Brooks, M.H., and Chabinsky, I.J., (Mater. Res. Soc. Proc., 124, Pittsburgh, PA 1988) pp. 45–57 Google Scholar
5 McGill, S.L., Walkiewicz, J.W., and Smyres, G.A., in Microwave Processing of Materials, edited by Sutton, W.H., Brooks, M.H., and Chabinsky, I.J., (Mater. Res. Soc. Proc., 124, Pittsburgh, PA 1988) pp. 247–52Google Scholar
6 See, e.g., Rosenberg, H. M., The Solid State, 3d ed., Oxford University Press, Oxford, 1988 pp. 226 Google Scholar
7 Kenkre, V.M., Skala, L., Weiser, M.W. and Katz, J.D., submitted to J. Mater. Sci.Google Scholar
8 Palaith, D. and Silberglitt, R., Am. Ceram. Soc. Bull., 68, 1601 (1989)Google Scholar
9 Ho, W.W., Am. Ceram. Soc. Bull., 68, 137 (1989)Google Scholar
10 Mackrodt, W.C., Advances in Ceramics, vol. 10, edited by Kingery, W. D., the American Ceramic Society, Columbus 1984, p. 62 Google Scholar
11 See e.g. Joos, G., Theoretical Physics, (Hafner Publishing Company, New York 1950)Google Scholar
12 Skala, L., Kenkre, V.M., Weiser, M.W. and Katz, J.D., submitted to J. App. Phys.Google Scholar