Chapter 19. V/MgAl2O4 Composites for Hostile Environment Applications - Part II: Properties

  1. Don Bray
  1. Ersan Üstündag1,
  2. Kurt E. Sickafus2,
  3. Thomas Hartmann2,
  4. Christopher J. Wetteland2,
  5. Tong D. Shen2 and
  6. Ricardo B. Schwarz2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch19

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

Üstündag, E., Sickafus, K. E., Hartmann, T., Wetteland, C. J., Shen, T. D. and Schwarz, R. B. (1988) V/MgAl2O4 Composites for Hostile Environment Applications - Part II: Properties, 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.ch19

Author Information

  1. 1

    Department of Materials Science, Keck Laboratory, California Institute of Technology, Pasadena, CA 91125

  2. 2

    Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545

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:

  • microscopy;
  • microstructure;
  • vanadium;
  • oxygen;
  • microhardness

Summary

Metal-ceramic composites consisting of vanadium (V) metal and magnesio-aluminate spinel (MgAl2O4) ceramic were developed for high radiation applications. A number of powder processing routes (presented in Part I) were followed that yielded composites with different properties. Results obtained from X-ray diffraction, electron microscopy and mechanical testing (fracture toughness and hot hardness) are presented relating microstructure and processing to material properties. A critical issue is the amount of oxygen dissolved in vanadium; it is shown that by reducing this amount substantial improvements were attained in composite properties.