Abstract
SUMMARYCeramic‐matrix composites have been produced using unidirectionally aligned Textron SCS‐6 fibres in a sintered reaction‐bonded matrix. A tape‐casting technique was used to produce a prepreg sheet that could be cut and stacked to form a layup. Al2O3 and Y2O3 were used as sintering aids, final sintering being carried out in a hot press at 1700°C.Matrix, fibre and interfacial microstructure has been characterized using analytical microscopical techniques. X‐ray mapping of the carbon and silicon distribution at the fibre–matrix interface was carried out, and evidence of reaction between the outer carbon‐rich layer of the fibre and the matrix was found.Micromechanical behaviour of interfaces has been investigated and compared with interfacial microstructure and macromechanical properties.
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