Chapter 20. Characterization of ZrO2Al2O3 Composites Sintered Using 2.45 GHz Radiation

  1. John B. Wachtman Jr.
  1. Eong S. Park and
  2. Thomas T. Meek

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313053.ch20

14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10

14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10

How to Cite

Park, E. S. and Meek, T. T. (1990) Characterization of ZrO2Al2O3 Composites Sintered Using 2.45 GHz Radiation, in 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313053.ch20

Author Information

  1. Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1990

ISBN Information

Print ISBN: 9780470374931

Online ISBN: 9780470313053

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Keywords:

  • volumtric;
  • microstructure;
  • microwave;
  • ceramics;
  • energy

Summary

The microwave heating process has shown potential for uniform heating on a macroscopic scale, internal and volumetric heating, and selective heating on both a macroscopic and microscopic scale with rapid heating rates possible. The composite material 80 wt% ZrO2 (+3 mol% Y2O3) 20 wt% Al2O3 was sintered in a Cober S6F microwave oven operating at 2.45 GHz. Microwave-processed and conventionally processed materials were sintered and their microstructure compared. The unusual microstructure of microwave-processed materials is explained by a microwave heating model presented in an earlier paper by Meek. Also, the smaller grain size of the microwave-processed materials is explained by Brook's theory.