Thermodynamic Aspects of the Prevention of the Oxidation of Graphite Fibers in Metal-Matrix Composites

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Abstract
A general model for oxidation at the interface between graphite fibers and metallic matrices is presented and the important thermo dynamic parameters related to this phenomenon identified. The very significant influence of external oxides, carbide or other intermediate phases between the fiber and the matrix, and protective fiber coatings upon the thermodynamic factors which control the direction and magnitude of the driving force for mass transport are discussed.

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