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Bonse, Jörn [Verfasser:in]; Höhm, S. [Verfasser:in]; Hartelt, Manfred [Verfasser:in]; Spaltmann, Dirk [Verfasser:in]; Pentzien, Simone [Verfasser:in]; Koter, Robert [Verfasser:in]; Marschner, S. [Verfasser:in]; Rosenfeld, A. [Verfasser:in]; Krüger, Jörg [Verfasser:in]

Femtosecond laser-induced surface nanostructures for tribological applications

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  • Medientyp: E-Artikel
  • Titel: Femtosecond laser-induced surface nanostructures for tribological applications
  • Beteiligte: Bonse, Jörn [Verfasser:in]; Höhm, S. [Verfasser:in]; Hartelt, Manfred [Verfasser:in]; Spaltmann, Dirk [Verfasser:in]; Pentzien, Simone [Verfasser:in]; Koter, Robert [Verfasser:in]; Marschner, S. [Verfasser:in]; Rosenfeld, A. [Verfasser:in]; Krüger, Jörg [Verfasser:in]
  • Erschienen: BAM-Publica - Publikationsserver der Bundesanstalt für Materialforschung und -prüfung (BAM), 2015
  • Sprache: Englisch
  • DOI: https://doi.org/10.1515/9783110354324-011
  • ISBN: 978-3-11-033718-1; 978-3-11-035432-4
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: Laser-induced periodic surface structures (LIPSS) were generated on two types of steel (100Cr6, X30CrMoN15-1) and two types of titanium (Ti, Ti6A14V) surfaces upon irradiation with multiple linear polarized femtosecond laser pulses in air environment (pulse duration 30 fs, central wavelength 790 nm, pulse repetition rate 1 kHz, Gaussian beam shape). Teh conditions (laser fluence, spatial spot overlap) were optimized in a sample-scanning geometry for the processing of large surface areas covered homogeneously by two different types of LIPSS - either near wavelength or sub-100 nm structures. The tribological performance of the nanostructured surfaces was characterized under reciprocating sliding at 1 Hz against a ball of hardened steel using different lubricants and normal forces. After 1000 cycles the corresponding wear tracks were characterized by optical and scanning electron microscopy. For specific conditions, the wear was strongly reduced and laser-generated nanostructures endured the tribological treatment. Simultaneously, a significant reduction of the friction coefficient was observed in the laser-irradiated LIPSS-covered areas, indicating the benefit of laser surface structuring for tribological applications. The spatially Gaussian shaped beam used for the laser processing was transformed via beam shaping into a top hat distribution at the surface of the samples for optimization. The tribological performance of the laser-induced nanostructures is discussed on the basis of different physical and chemical mechanisms.
  • Zugangsstatus: Freier Zugang