Effect of electrical current on tribological behavior of copper-impregnated metallized carbon against a Cu–Cr–Zr alloy |
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| Affiliation: | 1. The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China;2. State Key Laboratory of Traction Power, Tribology Research Institute, Southwest Jiaotong University, Chengdu 610031, China;1. Kolektor Group d.o.o., Vojkova 10, 5280 Idrija, Slovenia;2. Laboratory for Tribology and Interface Nanotechnology, University of Ljubljana, Faculty of Mechanical Engineering, Bogišičeva 8, 1000 Ljubljana, Slovenia;1. School of Mechanical Engineering, Northwestern Polytechnical University, Xi''an 710072, China;2. National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, China |
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| Abstract: | A block-on-slip ring-type wear tester was used to investigate the tribological behavior of copper-impregnated metallized carbon against a Cu–Cr–Zr alloy under 2 to 6 N applied load and 0 to 20 A electrical current. The sliding speed was maintained at 25 km/h. The wear loss of copper-impregnated metallized carbon increased with greater electrical current. Under a certain applied load, the wear loss with electrical current was minimized. The tribo-layer had an apparent effect on the friction coefficient. The wear mechanisms were complex, consisting of adhesive wear, abrasive wear and arc erosion. |
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