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Long Fiber Reinforced Sol-Gel Derived Al2O3 Composites

Published online by Cambridge University Press:  15 February 2011

J. J. Lannutti*
Affiliation:
Ceramics Division, Materials Science and Engineering, University of Florida, Gainesville, Florida 32611
D. E. Clark*
Affiliation:
Ceramics Division, Materials Science and Engineering, University of Florida, Gainesville, Florida 32611
*
*Nicalon, From Hexcel, Dublin, California
**Saffil, From ICI, Wilmington, Delaware
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Abstract

A simple casting technique was used to fabricate composites comprised of long fibers in an alumina matrix. Random fiber preforms were placed in trays and subsequently a liquid alumina sol was added and gelled. Dried sheets approximately 6 cm in diameter and 0.2 cm thick were prepared without cracking. The addition of glycerol to the sol improved drying properties, made the dry gel flexible, and permitted the lamination (plying) of several sheets.

Type
Research Article
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

1. Prewo, Karl M. and Brennan, J. J., “Silicon Carbide Yarn Reinforced Glass Matrix Composites,” J. Mater. Sci., 17(1982) 12011206.CrossRefGoogle Scholar
2. Rice, R. W., Matt, C. V., McDonough, W. J., McKinney, K. R. and Wu, C. C., “Refractory-Ceramic-Fiber Composites: Progress Meeds and Opportunities,” Ceramic Eng. and Sci. Proceedings, published by the American Ceramics Society, 3(9–10) 714721 (1982).Google Scholar
3. Rice, R. W., “Ceramic Composites--Processing Challenges,” Ceramic Eng. and Sci. Proceedings, published by the American Ceramics Society, 2 (7–8) 493508 (1981).Google Scholar
4. Rice, R. W., “Mechanisms of Toughening in Ceramic Matrix Composites,” ibid, pp. 661701.Google Scholar
5. Yoldas, Bulent E., “Alumina Gels that form Porous Transparent Al2O3,” J. Mater. Sci., 10(1975) 18561860.Google Scholar
6. Yoldas, Bulent E., “Alumina Sol Preparation from Alkoxides,” Amer. Ceram. Soc. Bull., 3(1975) 289290.Google Scholar
7. Clark, D. E. and Lannutti, J. J., “Phase Transformations in Sol-Gel Derived Aluminas,” to be published in the proceedings of the International Conference on Ultrastructure Processing of Ceramics, Glasses and Composites, Gainesville, Florida, 1983.Google Scholar