Chapter 14. Microwave—Induced Combustion Synthesis of TiC-Al2O3, Composites

  1. Ersan Ustundag and
  2. Gary Fischman
  1. Duangduen Atong and
  2. David E. Clark

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294567.ch14

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3

23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3

How to Cite

Atong, D. and Clark, D. E. (1999) Microwave—Induced Combustion Synthesis of TiC-Al2O3, Composites, in 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures : A: Ceramic Engineering and Science Proceedings, Volume 20, Issue 3 (eds E. Ustundag and G. Fischman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294567.ch14

Author Information

  1. Department of Materials Science and Engineering, University of Florida, Gainesville, FL

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1999

ISBN Information

Print ISBN: 9780470375631

Online ISBN: 9780470294567

SEARCH

Keywords:

  • microwave heating;
  • microstructure;
  • characterization;
  • transformed;
  • combustion

Summary

Self-propagating high—temperature synthesis (SHS) of TiC-Al2O3 composites has been performed with TiO2, A1, and C using microwave heating (MH) and microwave hybrid heating (MHH). As evidenced by earlier work, microwave synthesis of these composites produced a product of higher density and more uniform microstructure than those produced conventionally. This mainly is due to the uniformity of microwave energy absorbed and the exothermic nature of an SHS-type reaction. In the present study, the effects of sample preparation and processing variables on the ignition temperature, combustion temperature, and microstructure were investigated. These variables included the compositions of the reactants (with or without the addition of an excess metal), the addition of a product phase as a diluent, microwave power, and microwave duty cycle. In addition, DTA was used to estimate the ignition temperature of the reaction and to identify the reaction mechanism. Characterization of samples produced using DTA, MH, and MHH included XRD and SEM equipped with an X-ray energy dispersive spectrometer (EDS).