Journal
WEAR
Volume 477, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2021.203851
Keywords
C; C-SiC; Cu modification; Brake; Wear resistance
Funding
- Natural Science Foundation of China [51672218, 51632007]
- Synergy Innovation Foundation of the University and Enterprise for Graduate Students in Northwestern Polytechnical University [XQ201903]
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The Fe-Si-Cu blending modification significantly reduced wear of both the brake disc and pads in lab-scale dynamometer tests, showing promise for improving the performance of C/C-SiC brake materials in high-energy load brake systems.
Full-carbon/ceramic brake pairs have been recently proposed to achieve profound applications of C/C-SiC brake materials in brake systems with a high-energy load. Severe wear rate and a high and unstable coefficient of friction (COF) of the traditional C/C-SiC disc-pads pairs prevented further development of this material. In this study, FeSi75 alloy and Cu were mixed to form an infiltration agent to modify the C/C-SiC composites. We examined the braking performance of the Fe-Si-Cu modified C/C-SiC brake pads mated with traditional needled C/C-SiC brake disc using a lab-scale dynamometer. The results revealed that the Fe-Si-Cu blending modification yielded a significant wear reduction of the brake disc and pads. After a series of braking tests, the worn surface morphology was characterized, and the wear resistance improvement mechanism was analyzed.
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