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Microstructure of friction surface developed on carbon fibre reinforced carbon-silicon carbide (Cf /C-SiC)

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journal contribution
posted on 11.12.2013 by Yuan Wang, Houzheng Wu
We have used TEM to study the microstructure of friction surface of carbon fibre/carbon-silicon carbide composites brake discs after multi braking stop by using organic pads. A friction surface layer was developed consistently on the top of Si regions of the composites, but inconsistently on that of SiC and C. Inside the layer, amorphous silicon/silicon oxides appeared extensively with various non-metallic and metallic crystallites dispersed inside with sizes ranging from a few nanometers to several microns. A coherent interface between the friction layer and the composite surface was established under the braking conditions, whilst its sustainability varied notably in SiC and C regions. Microcracking near the friction surface appeared in SiC and C /C regions largely due to the extensive ductile deformation of SiC and weak interfaces between C and C . Material joining mechanisms were discussed to enlighten the friction transfer layer development on the surface of the composite discs.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Citation

WANG, Y. and WU, H., 2012. Microstructure of friction surface developed on carbon fibre reinforced carbon-silicon carbide (Cf/C-SiC). Journal of the European Ceramic Society, 32 (12), pp. 3509 - 3519.

Publisher

© Elsevier Ltd.

Version

AM (Accepted Manuscript)

Publication date

2012

Notes

This article was published in the Journal of the European Ceramic Society [© Elsevier Ltd.] and the definitive version is available at: http://dx.doi.org/10.1016/j.jeurceramsoc.2012.03.039

ISSN

0955-2219

Language

en

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