Surface texturing of steel by femtosecond laser and accompanying structure/phase transformations

Жидков, М. В.; Vershinina, T. N.; Голосова, О. А.; Kudryashov, S. I.; Ионин, А. А.

doi:10.1016/j.optlastec.2020.106370

Cited by 11 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In other the words, the groove wall collapsed due to extreme power density at 2 µm hatch pitch in the first pass. A similar phenomenon has been documented by Zhidkov et al [ 5 ] for the high-fluence regime, leading to melting within the heat-affected zone. The suggested sequence of events is explained schematically in Figure 7 .…”

Section: Resultssupporting

confidence: 85%

See 1 more Smart Citation

Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves

et al. 2023

View full text Add to dashboard Cite

The femtosecond (fs) laser ablation of metals is a precise method used to create microfeatures on the surface of the material with a minimized heat-affected zone (HAZ). Despite its many advantages, fs laser ablation often requires extensive trial-and-error experimentation before finding the optimal laser strategy for a desired geometry with minimal HAZ. The pulse-based two-temperature model (TTM) can significantly shorten this process by predicting the ablated geometry based on a set of material and laser parameters. However, this model has only been validated for percussion drilling and single lines. In this study, the pulse-based TTM is tested against parallel line experiments and subsequently modified to include geometry-dependent material parameters. More specifically, the threshold fluence and reflectivity of the material are modified to incorporate the temperature increase inside the standing features between parallel lines. The introduced geometry-dependent factors are fitted with experimental data and their inclusion in the model is shown to have a positive impact on the simulation results. The results show a clear amelioration in the shape and depth of the simulated profiles, with the error on the average depth and width of the modified TTM being lower than the average standard deviation on the experiments.

show abstract

Section: Resultssupporting

confidence: 85%

“…It is commonly accepted that, for a low number of pulses (

), the threshold fluence and the penetration depth decrease with every pulse [ 4 , 5 ]. This is called the incubation effect, which is caused by energy absorbed by the target material during the previous pulses.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Here, to address the role of these two parts on coloring mechanism, we established a numerical model based on the numerous research results on the LIPSS. Typically, as shown in Figure a, the bottom layer is metal; the metal surface is LIPSS structure, presenting the absolute value of the sine function fitted to the metal surface in numerical calculations with a period of 1 μm (approximate to the laser wavelength used in the experiment), a structure height of 200 nm, [ 20 ] an oxide layer thickness of 50 nm; [ 21 ] then above is the vacuum environment; the left side of the model is the light source; and this finite‐element simulation simulates the LIPSS coloring mechanism, so the light source is selected as white light, with wavelength of 380–780 nm, and an incident light of 45°. The reflections light is on the right side.…”

Section: Influence Of Laser Parameters On the Surface Color Of Stainl...mentioning

confidence: 99%

Laser Writing of Multilayer Structural Colors for Full‐Color Marking on Steel

Zhang,

Wang,

Wang

et al. 2023

Advanced Photonics Research

View full text Add to dashboard Cite

Laser‐induced periodic surface structure (LIPSS) can form structural color on the metal surfaces with high production efficiency and thermal stability, and has been used in various industrial applications such as unfaded color marking and anti‐counterfeiting. Herein, a novel fabrication scheme of multilayer LIPSS is proposed by multiple writing in situ with changing the laser polarization direction, to exhibit an effect of color superposition. To verify this approach, the color formation mechanism of LIPSS on the stainless‐steel surface is analyzed by finite‐element numerical calculation and reveals that the high‐angular dispersion of LIPSS is mainly the result of optical diffraction occurring on the surface of periodic structures. The relationship between the angular dispersion of multilayer LIPSS and laser‐processing parameters is established. Through the proposed multilayer LIPSS coloring technology, vivid full‐color patterns on the steel surface are demonstrated, and the in situ superposition of three‐layer graphs is realized, which can greatly enrich the color levels and be competitive in industrial applications.

show abstract

“…This method can be successfully applied to the steel surface [26], and the resulting texture parameters affect the water-repellency properties [27]. Bi-hierarchical surfaces with overlapping microtexture and LIPSS have proven to be more effective [28]. In this case, additional treatment is usually carried out to reduce the surface energy [29], resulting in water contact angle values exceeding 150 • , which corresponds to a superhydrophobic state [30].…”

Section: Introductionmentioning

confidence: 99%

Owens–Wendt Method for Comparing the UV Stability of Spontaneous Liquid-Repellency with Wet Chemical Treatment of Laser-Textured Stainless Steel

Myronyuk,

Baklan,

Rodin

2023

Biomimetics

View full text Add to dashboard Cite

The liquid-repellent properties of AISI 304 stainless steel surfaces textured with a femtosecond laser were studied, both after spontaneous hydrophobization and when treated with stearic acid and octyltrimethoxysilane. Surface topography has been shown to play a critical role in determining these properties. Although textures containing only LIPSS exhibited poor liquid-repellency, the performance was significantly improved after engraving the microtexture. The most effective topography consisted of 45 µm-wide grooves with a pitch of 60 µm and protrusions covered with a rough microcrystalline structure. Liquid-repellency, chemical treatment efficiency, and UV resistance were compared using derived Owens–Wendt parameters. The surface of femtosecond-laser-textured steel after spontaneous hydrophobization was found to be significantly less stable under UV irradiation than surfaces treated with stearic acid or octyltrimethoxysilane modifiers.

show abstract

Surface texturing of steel by femtosecond laser and accompanying structure/phase transformations

Cited by 11 publications

References 34 publications

Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves

Three-Dimensional Pulse-Based Modelling of Femtosecond Laser Ablation of Metals: Validation with Grooves

Laser Writing of Multilayer Structural Colors for Full‐Color Marking on Steel

Owens–Wendt Method for Comparing the UV Stability of Spontaneous Liquid-Repellency with Wet Chemical Treatment of Laser-Textured Stainless Steel

Contact Info

Product

Resources

About