Chapter 88. Processing, Microstructure, and Properties of Al2O3 -Y3Al5O12 (YAG) Eutectic Fibers

  1. John B. Wachtman Jr.
  1. T. Mah1,
  2. T. A. Parthasarathy1,
  3. M. D. Petry1 and
  4. L. E. Matson2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314180.ch88

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

How to Cite

Mah, T., Parthasarathy, T. A., Petry, M. D. and Matson, L. E. (2008) Processing, Microstructure, and Properties of Al2O3 -Y3Al5O12 (YAG) Eutectic Fibers, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch88

Author Information

  1. 1

    UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432

  2. 2

    Wright Laboratory, Materials Directorate, WL/MLLM, WPAFB, OH45433

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375266

Online ISBN: 9780470314180

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Keywords:

  • continuously;
  • propotional;
  • composites;
  • reinforcement;
  • oxide-oxide systems

Summary

Alumina-YAG eutectic fibers were grown continuously using Edge-defined Film-fed Growth (EFG) technique. A state-of-the-art EFG fiber growth apparatus was custom built to monitor and control processing parameters closely. Small diameter (< 75 m̈m) and high strength (< 2 GPa) continuous alumina-YAG eutectic fibers can be grown using EFG technique. Depending upon the processing variables, e.g., size of die tip, fiber pulling rate, die tip temperature, etc., various microstructures, fiber diameters, and strengths resulted. No apparent relationship between fiber strength and nominal fiber diameter was found. If there was any functional relationship, the effect seems to be secondary. The dominant feature which controls the fiber strength appears to be the scale of the eutectic phases. The strength appears to be propotional to eutectic size−1/2.