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Carbon and Oxide Coatings on Continuous Ceramic Fibers

Published online by Cambridge University Press:  15 February 2011

R. S. Hay ,
M. D. Petry ,
K. A. Keller ,
M. K. Cinibulk  and
J. R. Welch
R. S. Hay
Affiliation:
Wright Lab, Materials Directorate, WPAFB, Dayton, OH
M. D. Petry
Affiliation:
UES, INC, Dayton, OH
K. A. Keller
Affiliation:
UES, INC, Dayton, OH
M. K. Cinibulk
Affiliation:
Wright Lab, Materials Directorate, WPAFB, Dayton, OH
J. R. Welch
Affiliation:
Wright State University, Dayton, OH
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Abstract

Oxide - carbon multilayer coatings were continuously applied to various fibers of nominal SiC composition. A liquid-phase coating system that allows application of the coatings in a controlled atmosphere at relatively rapid rates was employed. Sugar - ammonium hydroxide solutions were used for carbon coatings, and aqueous sols were used for the oxides. Carbon was also deposited simultaneously with alumina by chemical vapor deposition of a hydrocarbon in the coating furnace. The coatings were extensively characterized by optical microscopy and TEM. Problems with embrittlement by oxide coatings and poor adherence of oxide coatings on carbon, and some possible solutions to these problems, are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 365: Symposium M – Ceramic Matrix Composites–Advanced High-Temperature Structural Materials , 1994 , 377
Copyright
Copyright © Materials Research Society 1995

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