2018
DOI: 10.1016/j.apsusc.2018.01.012
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Combined surface hardening and laser patterning approach for functionalising stainless steel surfaces

Abstract: The paper reports a laser patterning method for producing surfaces with dual scale topographies on ferritic stainless steel plates that are hardened by low temperature plasma surface alloying. Nitrogen and carbon based gasses were used in the alloying process to obtain surface layers with an increased hardness from 172 HV to 1001 HV and 305 HV, respectively. Then, a nanosecond infrared laser was used to pattern the plasma treated surfaces and thus to obtain super-hydrophobicity, by creating cellor channel-like… Show more

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Cited by 52 publications
(41 citation statements)
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“…These surfaces act as the reference surface before laser processing. In the majority of the literature dealing with laser processing, surface irregularities are characterized by two amplitude parameters, namely average (Ra = 1 /l l 0 |z(x)|dx) and root mean square (σ = 1 /l l 0 {z(x)} 2 dx) roughness, to specify the initial surface roughness [5,14,15,[22][23][24]. However, the height distributions alone cannot describe the surface completely, and spatial parameters like the autocorrelation length is required to completely characterize a surface [25,26].…”
Section: Surface Topographymentioning
confidence: 99%
See 1 more Smart Citation
“…These surfaces act as the reference surface before laser processing. In the majority of the literature dealing with laser processing, surface irregularities are characterized by two amplitude parameters, namely average (Ra = 1 /l l 0 |z(x)|dx) and root mean square (σ = 1 /l l 0 {z(x)} 2 dx) roughness, to specify the initial surface roughness [5,14,15,[22][23][24]. However, the height distributions alone cannot describe the surface completely, and spatial parameters like the autocorrelation length is required to completely characterize a surface [25,26].…”
Section: Surface Topographymentioning
confidence: 99%
“…This is an additional benefit of the D 2 − method to the benefits mentioned in [31]. Therefore, we employed the most widely used D 2 − method [14,22,39,40,42,[46][47][48][49] to determine the ablation threshold of materials at difference surface roughness values. Given that the laser fluence profile is Gaussian shaped, the ablated crater diameter D is related to the laser peak fluence F 0 and the ablation fluence threshold F th as [39]…”
Section: Ablation Thresholdmentioning
confidence: 99%
“…The material removal takes place locally at the zone where the laser beam is interacting with the substrate and also causes a limited chemical surface modification. [ 27 ] From an industrial point of view, S/US pulsed laser technologies are very flexible and allow to treat a wide range of materials as long as the substrate absorbs the used laser wavelength (i.e., infrared (IR) and visible (VIS) for metals [ 28,29 ] and ultraviolet (UV) for polymers [ 30 ] ). In addition, the scale‐up of such technologies for industrial applications has been already demonstrated in several cases.…”
Section: Introductionmentioning
confidence: 99%
“…The ablation with femtosecond‐lasers generates topographies characterized by periodic nano‐structured ripples that were recently used to modify the surface properties for an increasing number of applications . In particular, LIPSS have been successfully used to modify the wettability of steel surfaces , improve their tribological behavior , and increase hardness and wear resistance .…”
Section: Introductionmentioning
confidence: 99%