The Influence of Static Loads on the Oxidation Behaviour of Fibre Reinforced SiC/SiC Composites
A ceramic matrix composite (SiC/SiC) material was subjected to static stresses above and below the matrix cracking stress in an oxidising environment at 1000 and 1250°C. At the lower stress level, times to failure longer than 150 h were obtained, whereas the lifetime was significantly reduced at the higher stress level. A combined oxidation/matrix cracking mechanism was proposed, based on oxidation weight gain, microstructural investigation and the stress/rupture results.
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