People | Locations | Statistics |
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Ferrari, A. |
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Schimpf, Christian |
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Dunser, M. |
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Thomas, Eric |
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Gecse, Zoltan |
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Tsrunchev, Peter |
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Della Ricca, Giuseppe |
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Cios, Grzegorz |
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Hohlmann, Marcus |
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Dudarev, A. |
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Mascagna, V. |
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Santimaria, Marco |
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Poudyal, Nabin |
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Piozzi, Antonella |
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Mørtsell, Eva Anne |
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Jin, S. |
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Noel, Cédric |
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Fino, Paolo |
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Mailley, Pascal |
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Meyer, Ernst |
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Zhang, Qi |
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Pfattner, Raphael | Brussels |
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Kooi, Bart J. |
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Babuji, Adara |
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Pauporte, Thierry |
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Dienwiebel, M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2020Effect of environment on microstructure evolution and friction of Au-Ni multilayerscitations
- 2020Synergistic effects of antiwear and friction modifier additivescitations
- 2019Atomistic insights into lubricated tungsten/diamond sliding contactscitations
- 2017Microstructure, mechanical properties and friction behavior of magnetron-sputtered V-C coatingscitations
- 2017Analysis of the running-in of thermal spray coatings by time-dependent stribeck mapscitations
- 2014Nanoscale sliding friction phenomena at the interface of diamond-like carbon and tungstencitations
- 2014Origins of folding instabilities on polycrystalline metal surfacescitations
- 2012In situ observation of wear particle formation on lubricated sliding surfacescitations
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article
In situ observation of wear particle formation on lubricated sliding surfaces
Abstract
S.420-429 ; The topography of a Cu surface was monitored in situ during a sliding experiment with lubrication. Fe and steel pins were used as counter-faces and poly alpha olefin (PAO-8) was utilized as lubricant. 3-D images of a specific area within the wear track were acquired after every cycle. These experiments were carried out with a state-of-the-art tribometer, which uses a holographic microscope in immersion to observe the Cu surface online. The results show the evolution of the wear track, with a particular focus on the generation of flake-like wear particles. For the first time, these phenomena are correlated with the dynamic behavior of the surface. It is shown that the generation of wear particles results from various processes that occur on the surface, apart from crack propagation. The areas where wear takes place spread within the wear track during the experiment. Additional investigations of the subsurface structure were performed by means of focussed ion beam cross-s ections. These revealed a gradient from nanocrystalline to ultrafine-crystalline grain structure beneath the Cu surface, as well as an orientation effect when sliding in one direction, linking the present work with the results published in the literature. Finally, X-ray photoelectron spectroscopy depth profiles were obtained from the counter-faces. These indicated material transfer from the softer to the harder surface, but no deposition from the sliding pins onto the Cu surface. ; 60 ; Nr.1