Chapter 88. Processing, Microstructure, and Properties of Al2O3 -Y3Al5O12 (YAG) Eutectic Fibers
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1993 The American Ceramic Society
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. (1993) 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
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1993
Print ISBN: 9780470375266
Online ISBN: 9780470314180
- oxide-oxide systems
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.