Chapter 41. Reactive Processing, Microstructure, and Mechanical Properties of Al2O3-MoSi2 Composites

  1. Don Bray
  1. William G. Fahrenholtz1,
  2. Kevin G. Ewsuk2 and
  3. Ronald E. Loehman2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch41

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Fahrenholtz, W. G., Ewsuk, K. G. and Loehman, R. E. (1988) Reactive Processing, Microstructure, and Mechanical Properties of Al2O3-MoSi2 Composites, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch41

Author Information

  1. 1

    University of New Mexico and Advanced Materials Laboratory Albuquerque, NM 87106

  2. 2

    Sandia National Laboratories Albuquerque, NM 87185

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

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Keywords:

  • aluminosilicate;
  • microstructures;
  • alumina;
  • temperature;
  • composite

Summary

Composites of Al2O3 and Mo intermetallic compounds, specifically MoSi2, Mo(Si, Al)2, and Mo3Al8, were fabricated from Mo-Al-aluminosilicate powder mixtures by reactive hot pressing. The ceramic-to-intermetallic ratio and the composition of the intermetallic phase were varied systematically by controlling the molar ratio of the reactant powders or by using different aluminosilicate precursors. Composite microstructures were characterized by scanning electron microscopy. Mechanical behavior was evaluated by determining 4-point bend strength, Young's modulus, hardness, and coefficient of thermal expansion.