Development of Carbon-Aluminum Composite Materials.
Final rept. 30 Jun 72-31 Aug 73,
GENERAL ELECTRIC CO PHILADELPHIA PA RE-ENTRY AND ENVIRONMENTAL SYSTEMS DIV
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Exploratory development of a practical, continuous process with early scale-up potential for producing aluminum- or aluminum alloy-infiltrated tows of commercial graphite fiber was approached by application of selected coatings to the fiber surfaces through various chemical vapor deposition processes. Coating systems which were studied included a boron, b a boron-carbon borocarbon mixture, c silicon and d nitrided boron. Consecutive coatings of boron plus CVD aluminum were also investigated. The ability of coated fibers to be incorporated into aluminum-base composites was evaluated by means of vacuum infiltration and continuous meltdraw methods. Supporting studies included investigation of the interaction between molten aluminum and aluminum-4043 with representative surface coatings. Low fiber volume fraction experimental composites 3-10 vol. were evaluated by tensile or flexure tests together with optical and scanning electron microscopy. Modified author abstract
- Laminates and Composite Materials