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X-ray photoelectron spectroscopy study of catalyzed aluminum carbide formation at aluminum-carbon interfacesAluminum carbide may form at aluminum-graphite interfaces during the high-temperature processing of graphite fiber-reinforced aluminum metal matrix composites. The chemical interactions leading to the formation of the aluminum carbide in the solid state involve the breaking of the carbon-carbon bonds within the graphite, the transport of the carbon atoms across the interface, and the reaction with the aluminum to form Al4C3. The aluminum carbide formation process has been followed using X-ray photoelectron spectroscopy of model, thin-film, reaction couples. The overall reaction is shown to be catalyzed by the presence of water vapor. Water at the interface increases reaction kinetics by apparently weakening the bonds between the surface carbon atoms and their substrate. This result is in general agreement with what is known to occur during the oxidation of graphite in air.
Document ID
19920040555
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rabenberg, L.
(Texas, University Austin, United States)
Maruyama, Benji
(U.S. Navy, Naval Research Laboratory, Washington DC, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Subject Category
Composite Materials
Meeting Information
Meeting: International Conference on Composite Interfaces (ICCI-III)
Location: Cleveland, OH
Country: United States
Start Date: May 21, 1990
End Date: May 24, 1990
Sponsors: ASM International, U. S. Navy, Aluminum Company of America
Accession Number
92A23179
Funding Number(s)
CONTRACT_GRANT: NAG9-205
Distribution Limits
Public
Copyright
Other

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