wet performance of carbon ceramic composite brake-final-revised-combined.pdf (2.7 MB)
Friction performance of carbon/silicon carbide ceramic composite brakes in ambient air and water spray environment
journal contributionposted on 2015-07-15, 12:21 authored by Guangyu Bian, Houzheng Wu
We have examined friction performance, friction surface structure and chemistry of a carbon/silicon carbide ceramic brake disc tested against an organic pad in air, and water spray environment. An average friction coefficient of 0.52 and 0.4 for a braking stop is achieved after bedding in air for a composite disc comprising 53.1% and 17.7% SiC/Si, respectively. It is identified that 100% SiC/Si and ~50% Cf/C regions contribute the friction measurement. Tested in water spray, both brakes show a substantial fall of friction coefficient to a level <0.1. Evidences are provided for the existence of hydrodynamic friction. Friction transfer materials removal, SiC region polishing, and lower real contact pressure reinforce hydrodynamic process that a ceramic composite brake can experience.
Technology Strategy Broad (TSB), UK (TSB/CRD/100696)
- Aeronautical, Automotive, Chemical and Materials Engineering
Published inTribology International
Pages1 - 11
CitationBIAN, G. and WU, H., 2015. Friction performance of carbon/silicon carbide ceramic composite brakes in ambient air and water spray environment. Tribology International, 92, pp. 1 - 11.
Publisher© Elsevier Ltd.
- AM (Accepted Manuscript)
Publisher statementThis 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/