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Theoretical Analysis of Chemical Vapor Infiltration in Ceramic/Ceramic Composites

Published online by Cambridge University Press:  22 February 2011

Nyan-Hwa Tai  and
Tsu-Wei Chou
Nyan-Hwa Tai
Affiliation:
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, Delaware 19716
Tsu-Wei Chou
Affiliation:
Center for Composite Materials and Department of Mechanical Engineering, University of Delaware, Newark, Delaware 19716
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Abstract

A model for the deposition of alumina and titanium carbide within a ceramic fiber bundle from the chemical reactions has been examined in this paper. The model considers vapor diffusion, chemical reaction on the inner surface of the capillary, deposition film growth, porosity, and effects of reactants composition at various reactor temperature and pressure. Binary, multicomponent diffusion and Knudsen diffusion have been taken into account for the different stages of the CVI process. Furthermore, both diffusion controlled and reaction controlled processes have been examined in order to determine the dominating process in chemical vapor infiltration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 120: Symposium G – High-Temperature/High-Performance Composites , 1988 , 185
Copyright
Copyright © Materials Research Society 1988

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References

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