Ripple formation in various metals and super-hard tetrahedral amorphous carbon films in consequence of femtosecond laser irradiation

Pfeiffer, Manuel; Engel, Andy; Gruettner, Hagen; Guenther, Katja; Marquardt, Franka; Reiße, G.; Weißmantel, Steffen

doi:10.1007/s00339-012-7146-5

Cited by 35 publications

(13 citation statements)

References 7 publications

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“…Using different beam scanning strategies, they generated LIPSS and demonstrated a CoF reduction compared to a flat surface. The study in [12] showed a CoF decrease even without lubricant in a pin-on-disc configuration on TiC-coated steel surface. The first tribological tests on LIPSS-textured semiconductors were made by Eichstadt et al in [13], where an increase of the CoF was observed in both lubricated and non-lubricated conditions.…”

Section: Introductionmentioning

confidence: 85%

Tribological Properties of High-Speed Uniform Femtosecond Laser Patterning on Stainless Steel

et al. 2019

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In this work, an analysis of the tribological performance of laser-induced periodic surface structures (LIPSS) treated X5CrNi1810 stainless steel was conducted. The approach followed by authors was to generate LIPSS-patterned circular tracks, composed of radial straight grooves with uniform angular periodicity. This permitted to measure the tribological properties in a pin-on-flat configuration, keeping fixed the orientation between the grooves and the sliding direction. A Stribeck curve was measured, as well as the consequent wear. A deep analysis of the sub-surface conditions after LIPSS generation was moreover performed using Focused Ion Beam (FIB) cross-section.

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Section: Introductionmentioning

confidence: 85%

Tribological Properties of High-Speed Uniform Femtosecond Laser Patterning on Stainless Steel

et al. 2019

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“…Laser technique is widely used to change electrical, tribological, and nanomechanical properties of diamond‐like carbon films for their use in different applications. So the necessity arises to choose the laser source and the parameters of irradiation to achieve appropriate properties of the laser‐modified DLC films.…”

Section: Introductionmentioning

confidence: 99%

Raman Spectroscopy of Amorphous Carbon Films Modified by Single‐Pulse Irradiation of Nanosecond and Femtosecond Lasers

Arutyunyan

Комленок

Zavedeev

et al. 2017

Physica Status Solidi (b)

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Structural modifications of tetrahedral amorphous carbon (ta-C) films, caused by single-pulse laser irradiation, were investigated. Graphitization of the films, content and size of sp 2 carbon clusters were analyzed by means of Raman spectroscopy. It has been shown that pulse duration, as well as laser fluence and wavelength of irradiation, strongly influence the processes of graphitization and ablation of the ta-C films. In particular, heating of the films by the laser beam leads to formation of sp 2 carbon clusters and their enlargement up to the size of several nanometers. Material transformation to graphitized fraction is much more efficient in case of ns pulse duration. In case of fs pulse duration, such factors as multiphoton absorption and evaporation of over-heated material from the surface at high laser fluence, shorter time of irradiation, and heat transfer to the inner layers of the film lead to relatively weak graphitization characterized by the maximum size of the sp 2 carbon clusters of about 1 nm.

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“…With the development of laser technology, ripples can now be induced by different lasers with varied wavelengths and pulse widths. In general, LIPSS with periods close to the laser wavelength are called low spatial frequency LIPSS (LSFL), while LIPSS with periods much smaller than the laser wavelength are referred to as high spatial frequency LIPSS (HSFL) [20][21][22][23][24][25][26][27][28][29][30]. Several mechanisms have been proposed to explain the formation mechanisms of LIPSS, such as interference mechanisms [31], excitation of surface plasmon polaritons [32], self-organization [33], second harmonic generation [34], and Coulomb explosion [35].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Friction of Metals Using Laser-Induced Periodic Surface Nanostructures

2015

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Abstract:We report on the effect of femtosecond-laser-induced periodic surface structures (LIPSS) on the tribological properties of stainless steel. Uniform periodic nanostructures were produced on AISI 304L (American Iron and Steel Institute steel grade) steel surfaces using an 800-nm femtosecond laser. The spatial periods of LIPSS measured by field emission scanning electron microscopy ranged from 530 to 570 nm. The tribological properties of smooth and textured surfaces with periodic nanostructures were investigated using reciprocating ball-on-flat tests against AISI 440C balls under both dry and starved oil lubricated conditions. The friction coefficient of LIPSS covered surfaces has shown a lower value than that of the smooth surface. The induced periodic nanostructures demonstrated marked potential for reducing the friction coefficient compared with the smooth surface.

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Ripple formation in various metals and super-hard tetrahedral amorphous carbon films in consequence of femtosecond laser irradiation

Cited by 35 publications

References 7 publications

Tribological Properties of High-Speed Uniform Femtosecond Laser Patterning on Stainless Steel

Tribological Properties of High-Speed Uniform Femtosecond Laser Patterning on Stainless Steel

Raman Spectroscopy of Amorphous Carbon Films Modified by Single‐Pulse Irradiation of Nanosecond and Femtosecond Lasers

Reduction of Friction of Metals Using Laser-Induced Periodic Surface Nanostructures

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