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Microstructural analysis of isothermally exposed Ti/SiC metal matrix composites

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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 SCS-6™ and Sigma™. 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, Ti5Si4 and Ti5Si3. Extensive porosity is generated during the reaction and this prevents the formation of a completely protective interfacial layer.

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Authors and Affiliations

  1. Materials Science Program, University of Delaware, 19716, Newark, DE, USA

    I. W. Hall & J. -L. Lirn

  2. Laboratoire de Chimie du Solide du CNRS, Université de Bordeaux I, 33405, Talence cedex, France

    Y. Lepetitcorps & K. Bilba

Authors
  1. I. W. Hall
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  2. J. -L. Lirn
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  3. Y. Lepetitcorps
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  4. K. Bilba
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Hall, I.W., Lirn, J.L., Lepetitcorps, Y. et al. Microstructural analysis of isothermally exposed Ti/SiC metal matrix composites. J Mater Sci 27, 3835–3842 (1992). https://doi.org/10.1007/BF00545466

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  • DOI: https://doi.org/10.1007/BF00545466

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