Microstructure and Current Carrying Wear Behaviors of Copper/Sintered?Carbon Composites for Pantograph Sliders

Yaochuan Li; Jianxiang Huang; Man Wang; Junwu Liu; Chengyong Wang; Honghai Zhong; Yang Jiang

doi:10.1007/s12540-020-00652-6

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자료유형: 학술저널

저자정보: Yaochuan Li (Hefei University of Technology) Jianxiang Huang (Hefei University of Technology) Man Wang (Hefei University of Technology) Junwu Liu (Hefei University of Technology) Chengyong Wang (Hefei University of Technology) Honghai Zhong (Hefei University of Technology) Yang Jiang (Hefei University of Technology)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.9

발행연도: 2021.9

수록면: 3,398 - 3,408 (11page)

DOI: 10.1007/s12540-020-00652-6

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Neoteric copper/sintered?carbon (Cu/SC) composites for pantograph sliders were produced with the method of pressure infiltration. The friction and wear behaviors with or without current and mechanical performances of Cu/SC composites showedthat graphite acted dual effects on Cu/SC, that is, with the addition content of graphite, the electrical conductivity of carbonmatrices increased while the mechanical properties decreased. The friction coefficient and the wear rate decreased with theincrease of the graphite content on dry sliding wear test, and the minimum friction coeffient was only 0.096. Meanwhile,the friction coefficient increased first and then decreased with the current increse, while the wear rate just kept increasing. Scanning electron micrographs revealed a grid-like distribution of copper in the Cu/SC composites. Futhermore, throughobservation and analysis, it was found that Cu/SC composites of pantograph sliders were dominated by adhesive wear andcorrosive wear respectively under two different currents of 5 A and 15 A.

#Copper/sintered?carbon composites #Wear mechanism #Mechanical properties #Natural flake graphite #Electric friction and wear performance

참고문헌 (26)

참고문헌 신청

Yoshitaka Kubota / 2013 / Sliding wear behavior of copper alloy impregnated C/C composites under an electrical current / Wear 302(1-2):1492~1498

Shuai Ma / 2018 / Mechanical and wear performances of aluminum/sintered-carbon composites produced by pressure infiltration for pantograph sliders / Powder Technology 326:54~61

T. Ding / 2011 / Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph–catenary systems / Wear 271(9-10):1629~1636

X.C. Ma / 2008 / Sliding wear behavior of copper–graphite composite material for use in maglev transportation system / Wear 265(7-8):1087~1092

Wenlin Ma / 2011 / Effect of Sliding Speed on Surface Modification and Tribological Behavior of Copper–Graphite Composite / Tribology Letters 41(2):363~370

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