Chapter 63. Investigations of the Reduction of NiAl2O4 - II: X-Ray Diffraction Studies

  1. Don Bray
  1. B. Clausen1,
  2. E. Üstündag2,
  3. P. Rangaswamy3,
  4. M. A. M. Bourke3,
  5. S. L. Sass4 and
  6. T. J. Barbieri4

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch63

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

Clausen, B., Üstündag, E., Rangaswamy, P., Bourke, M. A. M., Sass, S. L. and Barbieri, T. J. (1988) Investigations of the Reduction of NiAl2O4 - II: X-Ray Diffraction Studies, 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.ch63

Author Information

  1. 1

    Manuel Lujan Jr. Neutron Scattering Center, MS H805, Los Alamos National Laboratory, Los Alamos, NM 87545

  2. 2

    Department of Materials Science, MC 138-78, California Institute of Technology, Pasadena, CA 91125

  3. 3

    Manuel Lujan Jr. Neutron Scattering Center, MS H805, Los Alamos National Laboratory, Los Alamos, NM 87545

  4. 4

    Cornell University, Dept. of Materials Science and Engineering, Ithaca, NY 14853

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:

  • ceramic;
  • alumina;
  • temperatures;
  • composite;
  • gradients

Summary

The volume shrinkage that accompanies the reduction of NiAl2O4 to a metal-ceramic composite of nickel and alumina leads to residual stress buildup. We have attempted to utilize these stresses to “temper” a ceramic component by placing it under compression. To prove the concept, we produced model specimens which we investigated using X-ray diffraction. Employing the conventional “d vs. sin2Ψ” method to map surface stresses, the results obtained from these measurements are presented together with finite element calculation predictions used to interpret experimental stress data.