Abstract
Powder metallurgy (PM) brake pads with stable friction behavior are one of the ideal choices for the counterparts of C/C–SiC brake disc that are expected to be applied to the future high-speed trains. In this study, iron- and copper-based PM pads were used to mating with the C/C–SiC brake disc. After testing the brake pairs using a lab-scale dynamometer, the C/C–SiC disc generated almost no wear loss. The coefficient of friction of the carbon/ceramic disc-PM pads brake pair varied nearly between 0.35 and 0.6 under different braking conditions. The analysis of friction surface indicated that the wear mechanism of Fe-based PM pads was mainly dominated by abrasion, while that of Cu-based pair mainly relied on adhesion and fatigue peeling.
Original language | English |
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Article number | 106686 |
Journal | Tribology International |
Volume | 154 |
DOIs | |
State | Published - Feb 2021 |
Keywords
- Braking behaviors
- C/C–SiC disc
- Powder metallurgy pads
- Wear mechanism