Chapter 28. Monazite Coatings on Nextel 720™, 610™, and Tyranno-Sa Fiber Tows; Effects of Precursors on Fiber Strength
- Todd Jessen,
- Ersan Ustundag
Published Online: 28 MAR 2008
DOI: 10.1002/9780470294635.ch28
Copyright © 2000 The American Ceramic Society
Book Title
24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4
Additional Information
How to Cite
Boakye, E. E., Petry, M. D., Hay, R. S. and Douglas, L. M. (2008) Monazite Coatings on Nextel 720™, 610™, and Tyranno-Sa Fiber Tows; Effects of Precursors on Fiber Strength, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch28
Publication History
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 2000
Book Series:
ISBN Information
Print ISBN: 9780470375693
Online ISBN: 9780470294635
- Summary
- Chapter
- References
Keywords:
- monazite precursors;
- coated fiber;
- ceramic composites (CMC);
- microcracking;
- fiber coating
Summary
Three different monazite precursors were applied to Nextel™ 610, 720 and Tyranno-SA™ fiber tows using a continuous vertical coater with immiscible liquid displacement. The coatings were cured in-line at 900°C to 1300°C in argon or in air, and then characterized for thickness and microstructure by optical microscopy, SEM and TEM. The as-coated filaments were tensile tested along with some of the 900°C coatings cured in air at 1200°C for 100 h. Coating characteristics and tensile strengths of the coated fibers from the three monazite precursors were compared. Coated fiber strengths were found to be dependent upon the quantity of gaseous species from the coating precursors and porosity. Coating precursors that made porous monazite coatings preserved fiber strength.