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Microstructural analysis of isothermally exposed Ti/SiC metal matrix composites

Abstract : Specimens of diffusion-bonded titanium metal matrix composites have been subjected to thermal exposure treatments and examined principally by transmission electron microscopy. The fibres investigated were SOS-6 TM and Sigma TM. The fibre/matrix reaction layers have been shown to consist of titanium carbide and two titanium silicides: The reaction proceeds by the initial formation of a layer of TiC followed by a layer of mixed silicides, Ti~Si4 and TisSi 3. Extensive porosity is generated during the reaction and this prevents the formation of a completely protective interfacial layer.
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Ketty Bilba, I Hall, J.-L Lirn, Y. Lepetitcorps. Microstructural analysis of isothermally exposed Ti/SiC metal matrix composites. Journal of Materials Science, Springer Verlag, 1992, 27 (14), pp.3835-3842. ⟨10.1007/BF00545466⟩. ⟨hal-01692698⟩



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