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Verlagsausgabe
DOI: 10.5445/IR/1000086551
Veröffentlicht am 15.10.2018

Friction reduction through biologically inspired scale-like laser surface textures

Schneider, Johannes; Djamiykov, Vergil; Greiner, Christian

Abstract:
Reducing friction forces is a major challenge in many engineering applications involving moving parts. For the past 50 years, the morphological texturing of surfaces for improving tribological properties has been investigated. Only recently, the application of biologically inspired surface features, like scales found on lizards and snakes, has come to the attention of tribologists. Here, we present results of the lubricated and unlubricated performance of biologically inspired scale-like textures applied with laser light to the surface of bearing steel pins. These were paired in unidirectional sliding against metallic (100Cr6), polymeric (PEEK) and ceramic (Al2O3) counter bodies. Additionally, a possible size effect was investigated by changing the scale diameter between 13 and 150 μm under dry sliding contact against sapphire. Our results demonstrate that depending on the contact conditions a biologically inspired surface morphology has the potential to reduce friction forces by more than 80%. However, under certain conditions, especially for slow-moving lubricated steel-on-steel and steel-on-ceramic contacts, these surface morphol ... mehr


Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Computational Materials Science (IAM-CMS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2190-4286
URN: urn:nbn:de:swb:90-865516
KITopen ID: 1000086551
Erschienen in Beilstein journal of nanotechnology
Band 9
Seiten 2561–2572
Vorab online veröffentlicht am 26.09.2018
Schlagworte bioinspiration, friction, laser surface texturing, scales, tribology
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