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On the deposition mechanism of Al2O3 in the CVI process for forming ceramic composites

Published online by Cambridge University Press:  31 January 2011

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

Chemical vapor infiltration (CVI) is a relatively new fabrication method for forming ceramic composites. The vapor deposition mechanism is determined by the reaction pressure and temperature, as well as the concentration and composition of the reactants. This commentary discusses two mechanisms for the deposition of alumina from AlCl3–H2–CO2 gas mixtures, and it explains that the reaction of the gas reactants on the substrate surface is a highly feasible deposition mechanism of the CVI process for forming alumina matrix composites. Comments are also made regarding a recent publication of Middleman in the Journal of Materials Research.

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Journal of Materials Research , Volume 5 , Issue 10 , October 1990 , pp. 2255 - 2256
Copyright
Copyright © Materials Research Society 1990

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References

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