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Chemical Interactions in the Aluminum-Carbon and Aluminum-Silicon Carbide Systems

Published online by Cambridge University Press:  21 February 2011

Benji Maruyama
Affiliation:
NRL-NRC Research Associate, Naval Research Laboratory Code 6371 Wash. D.C. 20375-5000, Formerly Center For Materials Science, University of Texas at Austin.
Fumio S. Ohuchi
Affiliation:
E.I. du Pont de Nemours Exp Station, Box 80365 Wilmington, DE 19898
L. Rabenberg
Affiliation:
Center For Materials Science, The University of Texas at Austin, Austin, TX 78712
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Abstract

X-ray Photoelectron Spectroscopy (XPS) was used to investigate the influence of O2 and H2O on the formation of aluminum carbide at aluminum-carbon and aluminumsilicon carbide interfaces. It was determined that dosing the interfaces with H2O catalyzed the formation of aluminum carbide in both the aluminum-carbon and aluminum-silicon carbide systems. This result is consistent with the oxidation model of carbide formation [1], previously developed to understand the kinetics of aluminum carbide formation at graphite-aluminum interfaces. These results imply that the formation of aluminum carbide in graphite and silicon carbide reinforced metal matrix composites, which severely degrades the composite mechanical properties by degrading the fiber and interface strength [2], is catalyzed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

1 Maruyama, B., Rabenberg, L. K., in Interfaces in Metal Matrix Composites, edited by Dhingra, A. K. and Fishman, S. G. eds (AIME Warrendale, 1986) p. 233.Google Scholar
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