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Structure Evolution in Tribological Interfaces Studied by Multilayer Model Alloys

Dienwiebel, Martin; Cihan, Ebru

Abstract (englisch):
During sliding of surfaces the near surfaces undergo significant changes in terms of topography, composition and microstructure and a so-called “third body” or “tribomaterial” forms which differs strongly from the bulk materials in terms of topography, composition and microstructure. This has been studied in a series of experiments using different metals sliding against metal, ceramics or coatings. In this work we use multilayer model alloys of an Au/Ni layer system to study effects of grain size on steady-stady friction by varying the layer spacing and the number of layers. Using microtribometer under ultra-high-vacuum conditions, we performed friction experiments sliding with a ruby sphere against Au/Ni multilayers. We find that the friction strongly depends on the layer spacing, and we are able to link the friction to the tribologically induced tribomaterial as found by FIB and TEM/EDS.

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Computational Materials Science (IAM-CMS)
Publikationstyp Vortrag
Publikationsdatum 23.04.2019
Sprache Englisch
Identifikator KITopen-ID: 1000097309
Veranstaltung Spring Meeting and Exhibit (MRS 2019), Phoenix, AZ, USA, 22.04.2019 – 26.04.2019
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