Chapter 46. Processing and Properties of Mo5Si3 Single Crystals

  1. Don Bray
  1. F. Chu and
  2. D. J. Thoma

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch46

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

Chu, F. and Thoma, D. J. (1988) Processing and Properties of Mo5Si3 Single Crystals, 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.ch46

Author Information

  1. Materials Science and Technology Division, Mail Stop G755, Los Alamos National Laboratory, Los Alamos, NM 87545, U. S. A.

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:

  • anisotropy;
  • silicides;
  • aluminides;
  • tetragonal;
  • titanium

Summary

Ultra-high temperature structural ceramics Mo5Si3 has been studied for materials processing and physical and mechanical properties. Single crystal Mo5Si3 has been synthesized by both optical floating zone and Czochralski methods. Thermal and elastic properties of Mo5Si3 single crystals were experimentally measured. Results show that Mo5Si3 is significantly anisotropic along a and c directions in thermal expansion. Single crystal elastic moduli indicate that it has less elastic anisotropy and lower shear moduli than some silicides. Room temperature Vickers indentation tests on (100) and (001) planes have been performed in different indenter diagonal orientations and the corresponding deformation and fracture modes have been revealed.