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Journal of Materials Science

, Volume 42, Issue 3, pp 763–771 | Cite as

Effect of heat treatment in air on the thermal properties of SiC fibre-reinforced composite. Part 1: a barium osumilite (BMAS) matrix glass ceramic composite

  • R. YilmazEmail author
  • R. Taylor
Article

Abstract

The thermal properties have been studied on a glass ceramic composite comprised of a barium osumilite (BMAS) matrix reinforced with SiC (Tyranno) fibres which has been subjected to a heat treatment in air in the range of 700–1,200 °C. Microstructural studies were carried out especially on of the interface between fibre and matrix. The presence of a carbon thin layer in the interface is a typical observation in SiC fibre-reinforced glass ceramic matrix composite systems. The microstructural evaluation and thermal properties showed a degradation of interfacial layer occurred at low heat treatment temperatures, (700–800 °C) this was attributed to the fact that, at those heat treatment temperatures the carbon rich layer formed during processing was oxidised away leaving voids between fibre and matrix, which were linked by isolated silicon-rich bridges. After heat treatment at higher temperatures of 1,000–1,200 °C, the thermal properties were retained or even enhanced by leaving a thick interfacial layer.

Keywords

Thermal Diffusivity Heat Treatment Temperature Scanning Electron Microscope Study Impingement Angle High Heat Treatment Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors would like to thank to NPL (National Physical Laboratory) provision of samples of composites and Mr. I. Brough and Mr. P. Kenway for assistance with SEM and TEM studies. R. Yilmaz would also like to thank to Sakarya University for financial support.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Technical Education Faculty, Metal Education DivisionSakarya UniversitySakaryaTurkey
  2. 2.Manchester Materials Science CentreUniversity of Manchester Institute of Science and TechnologyManchesterEngland

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