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The CVD of Ceramic Protective Coatings on SiC Monofilaments

Published online by Cambridge University Press:  15 February 2011

K. L. Choy
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK
B. Derby
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK
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Abstract

The TiB2, TiC and TiN coatings were studied as potential protective coatings for SiC fibre reinforced titanium alloys. These coatings were deposited by a CVD technique on resistively heated SiC monofilament fibres at reduced pressure in a cold wall reactor. The deposition conditions that are required to coat each of these materials were determined. The morphology, microstructure, phase composition and nature of the coatings were examined. The comparison and evaluation of the effectiveness and potential of these as protective coatings were carried out by incorporating the coated fibre into Ti-6A1–24V using the diffusion bonding method at 1100°C under 10 MPa for 1 hour.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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