Author version.pdf (2.04 MB)
Download file

Friction surface structure of a Cf/C-SiC composite brake disc after bedding testing on a full-scale dynamometer

Download (2.04 MB)
journal contribution
posted on 04.04.2016, 14:17 by Guangyu Bian, Houzheng Wu
We have examined friction surface structure of a carbon ceramic brake disc tested on a full-scale dynamometer with microscopy techniques. The bedded friction surface is composed of two types of regions: transferred materials (TM) and SiC. The TM regions were formed through the deposition of wear debris into surface voids, followed by compaction and crystallite refinement during braking. A thin friction layer (FL) was developed on top of TM and SiC regions with nano-sized copper/iron oxide crystallites as the primary constituent. Analysis shows that debris generated from pad is the main source of TM and FL. No evidence shows chemical diffusion bonding between TM and composite constituent. On silicon carbide surface, dislocations were activated as the sources of surface fracture.

Funding

This work was sponsored by the Technology Strategy Broad (TSB), UK.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Tribology International

Citation

BIAN, G. and WU, H., 2016. Friction surface structure of a Cf/C-SiC composite brake disc after bedding testing on a full-scale dynamometer. Tribology International, 99, pp.85–95

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

10/03/2016

Publication date

2016

Notes

This paper was accepted for publication in the journal Tribology International and the definitive published version is available at http://dx.doi.org/10.1016/j.triboint.2016.03.010.

ISSN

0301-679X

Language

en