期刊
TRIBOLOGY TRANSACTIONS
卷 57, 期 6, 页码 1157-1163出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10402004.2014.939319
关键词
C/C Composites; Arc Rate; Wear Rate; Friction Coefficient; Tribology Properties; Arc Discharge; Microstructure
资金
- Natural Science Foundation of China [U1034002]
- Science and Technology Department of Henan Province [132300410222]
A series of tests on arc rate, friction coefficient, and wear rate of electrical current collectors sliding against overhead contact wires under different conditions was carried out on a high-speed friction and wear testingmachine with a pin-on-disc configuration. The worn surface morphology and composition were examined using a scanning electron microscope and energy dispersion spectrum analyzer, respectively. The effects of current, velocity, and load on the arc rate, friction coefficient, and wear rate of C/C composites/QCr0.5 couples were investigated, and the influence mechanism of test parameters on C/C composites was explained. It is concluded that the wear rate increases with an increase in current and velocity and has a decreasing trend with the increase in load. The friction coefficient increases with an increase in velocity and load. The arc rate of C/C composites/QCr0.5 couples increases with an increase in current and velocity. Under the condition of the same current and velocity, when the load is 70 N, the arc rate is the lowest.
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