Abstract
This paper examines the nature of the interfaces formed between fine,δ-alumina fibres and aluminium-based matrices. Alloys containing magnesium and silicon have been employed, as well as high-purity aluminium. The fabrication process involved high-pressure melt infiltration of a fibrous preform. It has been found that no detectable interfacial reaction product is formed in these systems, although there is in some cases evidence of a limited exchange of magnesium between melt and fibre surface. It is concluded, both from measurements and from process analysis, that any distinct chemical reaction product formed at the interface between fibre and matrix must be limited in extent to the atomic monolayer level.
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Cappleman, G.R., Watts, J.F. & Clyne, T.W. The interface region in squeeze-infiltrated composites containing δ-alumina fibre in an aluminium matrix. J Mater Sci 20, 2159–2168 (1985). https://doi.org/10.1007/BF01112300
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DOI: https://doi.org/10.1007/BF01112300