Chapter 13. Novel Sol-Gel Coating Techniques for Ceramic Tows: In-Situ Curing vs Reaction Bonding
- John B. Wachtman Jr
Published Online: 28 MAR 2008
Copyright © 1991 The American Ceramic Society, Inc.
Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8
How to Cite
Hazlebeck, D. A., Glatter, I. Y. and Streckert, H. H. (1991) Novel Sol-Gel Coating Techniques for Ceramic Tows: In-Situ Curing vs Reaction Bonding, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch13
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1991
Print ISBN: 9780470375099
Online ISBN: 9780470313831
Fiber coating provides a means of controlling the nature of the fiber-matrix interface in composite materials to ensure that toughness and strength are maintained at high temperature. Two particularly promising new liquid phase techniques for coating multifilament tows are in-situ curing and reaction bonding. A number of commercially available ceramics fibers were coated with BN, HfO2, ZrO2, Al2O3, and Y2O3 using these novel processes as well as traditional sol-gel processes. The thickness and quality of the coatings were examined using scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDXS), and Auger spectroscopy. Mechanical testing was performed to evaluate interaction with the fiber. The benefits and drawbacks of the new coating methods are discussed with regard to coating properties and ease of processing.