Formation Processes of Metal-Rich Tribofilm on the Counterface During Sliding Against Metal/Diamondlike-Carbon Nanocomposite Coatings
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- Goto Minoru
- Department of Mechanical Engineering, Ube National College of Technology
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- Ito Kosuke
- College of Engineering, Nihon University
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- Fontaine Julien
- Laboratoire de Tribologie et Dynamique des Systémes, Ecole Centrale de Lyon
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- Takeno Takanori
- Graduate School of Engineering, Tohoku University
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- Miki Hiroyuki
- Frontier research Institute for Interdisciplinary Science, Tohoku University
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- Takagi Toshiyuki
- Institute of Fluid Science, Tohoku University
Abstract
Formation processes of metal-rich tribofilm on the counterface during sliding against metal/diamondlike-carbon nanocomposite coatings have been investigate. The hybridization between DLC matrix and Cu or Ag provides good electric conductivity to solid lubricant films. Metal-rich tribofilms are formed on the counterface of both Cu-DLC and Ag-DLC during sliding, which is important factor to obtain excellent tribological performance as well as good electric conductivity. Such tribofilms are almost pure Cu and Ag. The origin of the tribofilm is the metal clusters in the Me-DLC, and the adhered Cu and Ag clusters on the counterfaces are possibly sintered and refined during iterative plastic deformation in the frictional interface which generates high pressure and high shear rate.
Journal
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- Tribology Online
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Tribology Online 10 (5), 306-313, 2015
Japanese Society of Tribologists
