Development and tribological studies of a novel metal‐ceramic hybrid brake disc

Titelangaben

Opel, Thorsten ; Langhof, Nico ; Krenkel, Walter:
Development and tribological studies of a novel metal‐ceramic hybrid brake disc.
In: International Journal of Applied Ceramic Technology. Bd. 19 (2022) Heft 1 . - S. 62-74.
ISSN 1744-7402
DOI der Verlagsversion: https://doi.org/10.1111/ijac.13826

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Abstract

Ceramic matrix composite (CMC) friction materials show promising tribological properties. Typically, carbon ceramic brake discs consist of a C/SiC rotor which is joined to a brake disc bell. Within this work, a novel metal-ceramic hybrid brake disc, consisting of C/SiC friction segments which are mounted by screws onto an aluminium carrier body, was designed and investigated. A prototype was built which was tribologically tested with three different brake pad materials, LowMet reference, modified SF C/SiC as well as C/C. A constant starting sliding velocity of 20 m/s and braking pressures of 1, 2 and 3 MPa were investigated. To simulate emergency braking conditions ten consecutive brake applications were carried out in close succession for each brake pad material and braking pressure. The C/C brake pad material showed the highest average coefficient of friction followed by the LowMet and C/SiC material. However, the wear rates of the C/C and LowMet material were orders of magnitude higher compared to the C/SiC material.