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Flauder, Stefan ; Langhof, Nico ; Krenkel, Walter ; Schafföner, Stefan:
Frictional performance of C/C-SiC materials at high loads : The role of composition and third-body.
In: Open Ceramics.
Bd. 14
(2023)
.
- 100364.
ISSN 2666-5395
DOI: https://doi.org/10.1016/j.oceram.2023.100364
Abstract
Ceramic matrix composites like carbon fiber-reinforced silicon carbon (C/C-SiC) are brake materials for applications at high thermo-mechanical loads. This study investigates the influence of three C/C-SiC pad materials with different compositions on frictional performance. For this purpose, the ceramic pad materials were tested against a steel disk on a dynamometer at brake pressures from 20 to 60 MPa. A large effect due to the different Si and SiC contents of the three pad materials on the frictional behavior was expected. Although the wear rates differed from 40 to 140 mm3/MJ, only marginal differences were found for the coefficient of friction. Hence, additional tests to interrupt and sequence the brake procedure revealed the formation of an intermediate metallic transfer layer from the steel disk on the ceramic pads. The formation and disappearance of this third-body, which was not found in start-complete-stop testing, and the consequences for the frictional properties are discussed.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Ceramic matrix composites (CMC); C/C-SiC; Frictional testing; Tribo layer |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Keramische Werkstoffe > Lehrstuhl Keramische Werkstoffe - Univ.-Prof. Dr.-Ing. Stefan Schafföner |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 21 Jun 2023 06:50 |
| Letzte Änderung: | 21 Jun 2023 06:50 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/81375 |