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Wan Q, Hu X, Yu T, Guo P, Wang J, Shi H, Chen S. Wetting State Transition of Laser Direct Writing Aluminum Surface Based on Coupling Effect of Micro/Nanoscale Characteristics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:15196-15204. [PMID: 39007690 DOI: 10.1021/acs.langmuir.4c01614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Micro/nanostructured metal surfaces fabricated by laser direct writing (LDW) have been widely used in wettability-related fields. Previous studies focused on the effects of surface structural patterns or chemical composition on wettability, while the coupling mechanism and respective contributions of the two are not distinct. This paper reveals the coupling effect of micro/nanoscale characteristics on the wettability of LDW aluminum surfaces and elucidates the transition mechanism between wetting states on the surfaces with linear laser energy density. Through the contact angle experiments, a wetting state transition of the LDW surface is found from a more hydrophilic than pristine rose petal effect to lotus effect. Based on the bionic analysis method of the superhydrophobicity factors of lotus leaves, the contributions to the wettability of LDW surfaces are divided into the micro/nanoscale characteristics. The theoretical model for identifying the wetting state of a rough surface is proposed. Based on this model, the average Young's contact angle, θ̅Y, is calculated, which indicates the contribution of the nanoscale characteristics. During the transition process from rose petal effect to lotus effect, θ̅Y > 90° is a necessary condition for detachment from the rose petal effect, which is contributed by the high specific surface organic adsorption at the nanoscale. What is more, the wetting state determined by the microscale characteristics further enhances its hydrophobicity, leading to the lotus effect. Based on the wetting state identification model and the Cassie-Baxter equation, the change of micro/nanoscale characteristics on aluminum surfaces after LDW treatment is presented, and the influence of micro/nanoscale characteristics on the wetting state is decoupled and quantified. This research helps to coordinate the effects of surface structure and chemical composition on wettability in the design of specific wettability functional surfaces and can also be applied to other high heat density surface processing fields.
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Affiliation(s)
- Qinlin Wan
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Xingjun Hu
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Tianming Yu
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Peng Guo
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Jingyu Wang
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Hongda Shi
- School of Mechatronic Engineering, Changchun University of Technology, Changchun 130012, China
| | - Shen Chen
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
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Cholkar A, Chatterjee S, Jose F, O’Connor R, McCarthy É, Weston N, Kinahan D, Brabazon D. Parametric investigation of ultrashort pulsed laser surface texturing on aluminium alloy 7075 for hydrophobicity enhancement. THE INTERNATIONAL JOURNAL, ADVANCED MANUFACTURING TECHNOLOGY 2024; 130:4169-4186. [PMID: 38283951 PMCID: PMC10810958 DOI: 10.1007/s00170-024-12971-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 01/03/2024] [Indexed: 01/30/2024]
Abstract
Hydrophobicity plays a pivotal role in mitigating surface fouling, corrosion, and icing in critical marine and aerospace environments. By employing ultrafast laser texturing, the characteristic properties of a material's surface can be modified. This work investigates the potential of an advanced ultrafast laser texturing manufacturing process to enhance the hydrophobicity of aluminium alloy 7075. The surface properties were characterized using goniometry, 3D profilometry, SEM, and XPS analysis. The findings from this study show that the laser process parameters play a crucial role in the manufacturing of the required surface structures. Numerical optimization with response surface optimization was conducted to maximize the contact angle on these surfaces. The maximum water contact angle achieved was 142º, with an average height roughness (Sa) of 0.87 ± 0.075 µm, maximum height roughness (Sz) of 19.4 ± 2.12 µm, and texture aspect ratio of 0.042. This sample was manufactured with the process parameters of 3W laser power, 0.08 mm hatch distance, and a 3 mm/s scan speed. This study highlights the importance of laser process parameters in the manufacturing of the required surface structures and presents a parametric modeling approach that can be used to optimize the laser process parameters to obtain a specific surface morphology and hydrophobicity. Supplementary Information The online version contains supplementary material available at 10.1007/s00170-024-12971-8.
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Affiliation(s)
- Abhijit Cholkar
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, Glasnevin, Dublin, Ireland
- Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Ireland
- DCU Water Institute, Dublin City University, Glasnevin, Dublin, Ireland
| | - Suman Chatterjee
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, Glasnevin, Dublin, Ireland
- Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Ireland
- DCU Water Institute, Dublin City University, Glasnevin, Dublin, Ireland
| | - Feljin Jose
- School of Physical Sciences, Dublin City University, Glasnevin, Dublin, Ireland
| | - Robert O’Connor
- Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Ireland
- School of Physical Sciences, Dublin City University, Glasnevin, Dublin, Ireland
| | - Éanna McCarthy
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, Glasnevin, Dublin, Ireland
- Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Ireland
- School of Physical Sciences, Dublin City University, Glasnevin, Dublin, Ireland
| | - Nick Weston
- Renishaw Edinburgh, Riccarton, Edinburgh, EH14 4AP UK
| | - David Kinahan
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, Glasnevin, Dublin, Ireland
- Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Ireland
- DCU Water Institute, Dublin City University, Glasnevin, Dublin, Ireland
| | - Dermot Brabazon
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, Glasnevin, Dublin, Ireland
- Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Dublin City University, Glasnevin, Dublin, Ireland
- DCU Water Institute, Dublin City University, Glasnevin, Dublin, Ireland
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Myronyuk O, Baklan D, Rodin AM. Owens-Wendt Method for Comparing the UV Stability of Spontaneous Liquid-Repellency with Wet Chemical Treatment of Laser-Textured Stainless Steel. Biomimetics (Basel) 2023; 8:584. [PMID: 38132523 PMCID: PMC10741767 DOI: 10.3390/biomimetics8080584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023] Open
Abstract
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.
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Affiliation(s)
- Oleksiy Myronyuk
- Department of Chemical Technology of Composite Materials, Chemical Technology Faculty, Igor Sikorsky Kyiv Polytechnic Institute, Beresteiskyi Ave. 37, 03056 Kyiv, Ukraine; (O.M.); (D.B.)
| | - Denys Baklan
- Department of Chemical Technology of Composite Materials, Chemical Technology Faculty, Igor Sikorsky Kyiv Polytechnic Institute, Beresteiskyi Ave. 37, 03056 Kyiv, Ukraine; (O.M.); (D.B.)
| | - Aleksej M. Rodin
- Solid State Laser Laboratory, Department of Laser Technologies, Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300 Vilnius, Lithuania
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Costache F, Valette S, Bonse J. Special Issue "Dynamics and Processes at Laser-Irradiated Surfaces-A Themed Issue in Honor of the 70th Birthday of Professor Jürgen Reif". NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:611. [PMID: 36770572 PMCID: PMC9920410 DOI: 10.3390/nano13030611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
The Special Issue "Dynamics and Processes at Laser-irradiated Surfaces" is dedicated to the 70th birthday of Jürgen Reif, retired full professor, former Chair of Experimental Physics II of the Faculty of Physics of the Brandenburg University of Technology Cottbus-Senftenberg in Germany [...].
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Affiliation(s)
- Florenta Costache
- Fraunhofer Institute for Photonic Microsystems, IPMS, Maria-Reiche-Str. 2, 01109 Dresden, Germany
| | - Stéphane Valette
- Ecole Centrale de Lyon, LTDS, 36 Avenue Guy de Collongue, 69134 Ecully, France
| | - Jörn Bonse
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
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Leggio L, Di Maio Y, Pascale-Hamri A, Egaud G, Reynaud S, Sedao X, Mauclair C. Ultrafast Laser Patterning of Metals Commonly Used in Medical Industry: Surface Roughness Control with Energy Gradient Pulse Sequences. MICROMACHINES 2023; 14:251. [PMID: 36837953 PMCID: PMC9967074 DOI: 10.3390/mi14020251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Ultrafast laser ablation is widely used as a versatile method for accurate micro-machining of polymers, glasses and metals for a variety of industrial and biomedical applications. We report on the use of a novel process parameter, the modulation of the laser pulse energy during the multi-scan texturing of surfaces. We show that this new and straightforward control method allows us to attain higher and lower roughness (Ra) values than the conventional constant pulse energy irradiation sequence. This new multi-scanning laser ablation strategy was conducted on metals that are commonly used in the biomedical industry, such as stainless steel, titanium, brass and silver samples, using a linear (increasing or decreasing) gradient of pulse energy, i.e., varying the pulse energy across successive laser scans. The effects of ablation were studied in terms of roughness, developed interfacial area ratio, skewness and ablation efficiency of the processed surfaces. Significantly, the investigation has shown a global trend for all samples that the roughness is minimum when a decreasing energy pulse sequence is employed, i.e., the irradiation sequence ends up with the applied laser fluences close to threshold laser fluences and is maximum with increasing energy distribution. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis on single craters with the three different energy deposition conditions revealed a chaotic and random material redistribution in the cases of uniform and increasing energy distributions and the presence of regular laser-induced periodic surface structures (LIPSS) at the bottom of the ablation region in the case of decreasing energy distribution. It is also shown that the ablation efficiency of the ablated surfaces does not significantly change between the three cases. Therefore, this novel energy control strategy permits the control of the roughness of the processed surfaces without losing the ablation efficiency.
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Affiliation(s)
- Luca Leggio
- Laboratoire Hubert Curien, Université Jean Monnet, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
| | - Yoan Di Maio
- GIE Manutech-USD, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
| | - Alina Pascale-Hamri
- GIE Manutech-USD, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
| | - Gregory Egaud
- GIE Manutech-USD, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
| | - Stephanie Reynaud
- Laboratoire Hubert Curien, Université Jean Monnet, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
| | - Xxx Sedao
- Laboratoire Hubert Curien, Université Jean Monnet, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
- GIE Manutech-USD, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
| | - Cyril Mauclair
- Laboratoire Hubert Curien, Université Jean Monnet, 18 Rue Professeur Benoît Lauras, 42000 Saint-Étienne, France
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Yang L, Ma W, Gao F, Xi S, Ma Z, Ma Z. Contact and Tribological Study of Micro/Nano Groove Texture on the Surface of Gas Bearing Materials Based on Nanoscale. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:152. [PMID: 36616062 PMCID: PMC9824106 DOI: 10.3390/nano13010152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/25/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
As a kind of sliding bearing, the gas bearing is widely used in high-speed rotating machinery. It realizes energy cleaning in the field of high-speed rotating machinery. In order to solve the problem of reducing the service life of gas bearings due to friction during startup and shutdown, we use micromachining technology to process groove textures with different groove widths on the surface of 0Cr17Ni7Al, a common material for gas bearings. A ball-disc friction contrast test is conducted under dry friction conditions with and without texture. The experiment shows that the lowest average friction coefficient of 0.8 mm texture is σ = 0.745. When the friction radius is 22.5 mm, the wear rate of 1.0 mm texture is the lowest at ω = 3.118 × 10-4mm3/N·mm. However, the maximum friction coefficient reached is σ = 0.898. Under the nanometer scale, the contact between friction pairs is fully analyzed. The influence mechanism of different groove widths, friction impacts and climbing heights on the friction and wear properties of the micromechanical groove texture on the surface of 0Cr17Ni7Al stainless steel is studied at the nano-fractal scale. The effects of different width grooves on the surface texture and tribological properties of the micromachine are studied.
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Affiliation(s)
- Liguang Yang
- School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Wensuo Ma
- School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Fei Gao
- School of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Shiping Xi
- Luoyang Bearing Research Institute Co., Ltd., Luoyang 471039, China
| | - Zhenyu Ma
- School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Zhenhao Ma
- School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471023, China
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