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Fretting wear characteristics of Ni/Cu multilayers electrodeposited on beryllium bronze substrate
Affiliation:1. Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77204, USA;2. Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN 55455, USA;3. Department of Earth, Environmental and Planetary Sciences, Rice University, Houston, TX 77005, USA;1. Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18, Novosibirsk, 630128, Russia;2. Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia;3. Novosibirsk State Technical University, Karla Marksa 20, Novosibirsk, 630073, Russia;1. Boreskov Institute of Catalysis SB RAS, pr. Ac. Lavrentieva, 5, 630090, Novosibirsk, Russian Federation;2. National Research Tomsk Polytechnic University, Lenin Av., 30, 634050, Tomsk, Russian Federation;1. Programa de Nanociencias y Nanotecnología, Centro de Investigación y de Estudios Avanzados, CINVESTAV-IPN, Av. Instituto Politécnico Nacional 2508, Col. Zacatenco, 07360 Mexico City, Mexico;2. Dpto. Ciencia de los Materiales, CINVESTAV-IPN Unidad Queretaro, Libramiento Norponiente No. 2000 Fracc. Real de Juriquilla, 76230, Queretaro, Mexico;3. Depto. Química, CINVESTAV-IPN, 07360, México City, Mexico
Abstract:Fretting test were carried out with a sphere-on-flat geometry to investigate the wear mechanisms of electrodeposited Cu/Ni multilayer films. The effect of the layer spacing of multilayer films on the fretting wear and friction coefficient of the specimens has also been studied in the fretting conditions. Scanning electron microscopy (SEM) and electron probe microanalyser (EPMA) were used to observed and analyze the morphology of the fretting surface and wear debris of the films. The results of the fretting experiments showed that the sublayer thickness was more than 60 nm, the fretting wear resistance of multilayer films was poor. However, the multilayer films with the < 60 nm sub-layer thickness have much better fretting wear resistance than the thick ones with > 60 nm sub-layer thickness. The mechanism of fretting wear for multilayer films were adhesion and fatigue. Wear debris of fretting was small. The debris comprised largely of oxide particles.
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