Tribological studies of carbon fiber reinforced zirconium diboride based UHTCMC-material paired with carbon disk material

Title data

Meiser, Matthias ; Mor, Matteo ; Langhof, Nico ; Vinci, Antonio ; Galizia, Pietro ; Alber-Laukant, Bettina ; Tremmel, Stephan ; Schafföner, Stefan ; Sciti, Diletta:
Tribological studies of carbon fiber reinforced zirconium diboride based UHTCMC-material paired with carbon disk material.
In: Journal of the European Ceramic Society. Vol. 46 (2026) Issue 4 . - 117930.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2025.117930

Official URL:

Abstract in another language

The behavior of ZrB2-10 vol SiC ultra-high temperature ceramic matrix composites (UHTCMCs) reinforced with pitch-based carbon fibers (CF) for self-lubricated braking against a carbon fiber reinforced carbon (C/C) disk was investigated, revealing C/C-specific two-regime friction behavior. 0°/90° carbon fiber fabric (ZL) and random short carbon fibers (ZS) were used as two different types of reinforcement. Tribological tests at 1 and 3 MPa (13.5 m/s sliding speed) on an inertia dynamometer were complemented by SEM/EDS of the wear surfaces and thermal-shock quenching up to 1500 °C. Tests revealed a pronounced reversible COF drop, driven by carbon decomposition at ≈ 470 °C from > 0.5 to < 0.2 and back upon cooling. Both pad and disk debris jointly formed the carbonaceous wear film, while ZL pads showed pressure-dependent film breakdown. Pad and disk thickness loss was similar, but disk mass wear was disproportionately high. Both samples showed sufficient thermal shock resistance for braking applications up to 1000 °C with ZL being stable at even higher temperatures.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	UHTCMC; ZrB; Tribological properties; C/C disk; Lubricant; Thermal shock
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner Faculties > Faculty of Engineering Science > Chair Engineering Design and CAD > Chair Engineering Design and CAD - Univ.-Prof. Dr.-Ing Stephan Tremmel Research Institutions > Central research institutes > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	24 Jun 2026 05:47
Last Modified:	24 Jun 2026 05:47
URI:	https://eref.uni-bayreuth.de/id/eprint/98878