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Surface Conditioning of Carbon-Fiber Ceramic Rotors against Organic Pads
Technical Paper
2012-01-1833
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Previous research has highlighted that the formation of a sustained friction film, desired for stable and predictable friction performance, is highly dependent upon the region of the substrate (CMC) being examined. In attempt to improve the friction performance, notably bedding-in, research at LU has been developing coatings aimed at ensuring friction film development across the substrate. This paper focuses on the performance of one of these coating formulations, and examines the performance of this on a laboratory scale dynamometer. Subsequently, the coating has then been applied to a full size brake disc, as used on a prestige vehicle, for dynamometer testing at an industry scale for comparative purposes.
On both lab and full scale samples the bedding performance shows improvements over the standard material, and at the full scale the coating indicates improved stability of subsequent friction performance through a modified AK Master test schedule. Post-test OM and SEM characterization of the friction surfaces shows that friction film formation has improved over the standard samples, and EDS elemental analysis indicates the presence of the original coating remaining within the formed friction film.
Further characterization of the friction surface aims to identify the interactions between the coating and the substrate before and after friction testing.
Citation
Swarbrick, A. and Wu, H., "Surface Conditioning of Carbon-Fiber Ceramic Rotors against Organic Pads," SAE Technical Paper 2012-01-1833, 2012, https://doi.org/10.4271/2012-01-1833.Also In
References
- Krenkel et al ‘C/C-SiC Composites for Advanced Friction Applications’ Advanced Engineering Materials 2002 4 7
- Wang, Yuan Wu, Houzheng ‘Friction Surface Evolution of Carbon Fibre Reinforced Carbon/Silicon Carbide (C f /C-SiC) Composites’ Journal of the European Ceramic Society 30 15 November 2010 3187 3201
- Wu, H. Wang, Y. Pindar, D. Ferdani, P. “Interaction Between Ceramic Matrix Composite and Organic Pad Materials and its Impact on the Friction Performance,” SAE Technical Paper 2011-01-2350 2011 10.4271/2011-01-2350