Chapter 13. Growth and Properties of Single Crystal Oxide Fibers

  1. John B. Wachtman Jr
  1. J. S. Haggerty1,
  2. K. C. Wills1 and
  3. J. E. Sheehan2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313848.ch13

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10

How to Cite

Haggerty, J. S., Wills, K. C. and Sheehan, J. E. (1991) Growth and Properties of Single Crystal Oxide Fibers, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313848.ch13

Author Information

  1. 1

    Massachusetts Institute of Technology Cambridge, MA 02139

  2. 2

    MSNW, Inc. Escondido, CA 92025

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780470375105

Online ISBN: 9780470313848

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Keywords:

  • atmospheres;
  • temperature;
  • hexagonal;
  • prismatic;
  • equilibrium

Summary

Pure and doped single crystal Al2O3 fibers have been grown and evaluated as candidate reinforcements for high-temperature composites. Fibers were grown by the laser heated floating zone process. Growth axes were selected to minimize resolved shear stresses on active slip systems. Growth atmospheres (O2, Ar+O2, Ar+H2) were selected to maximize the quality of the fibers. Dopants include mixtures of Cr2O3, TiO2, and MgO. Fibers have been characterized by orientation, substructure, shape, and mechanical properties. Mechanical properties include room temperature tensile strengths and creep rates at 1700°-1900°C. Growth procedures and properties are reported.