Influence of laser fluences and scan speeds on the morphologies and wetting properties of titanium alloy

Hongqiang, Dou; Líu, Hao; Xu, Shuxin; Yu, Cheng; Miao, Xinxiang; Lu, Hongda; Jiang, Xiaodong

doi:10.1016/j.ijleo.2020.165443

Cited by 18 publications

(27 citation statements)

References 40 publications

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“…29 Dou et al conducted laser ablation of Ti-6Al-4V using a Ti:sapphire laser with a wavelength of 800 nm and a pulse duration of 30 fs, which showed that the average surface roughness increased with the laser fluence and scan speed. 30 However, it would reach a limit at which the material surface is melted by the high laser energy; as such, multiple laser passes can be used at a relatively low fluence to avoid melting while still increasing the height of micropillars. After determining an effective laser fluence, the number of laser scans was varied at constant fluence (1460 and 585 mJ/cm 2 for B 4 C and MoAlB, respectively) to investigate micropillar height changes.…”

Section: Surface Characterizationmentioning

confidence: 99%

Laser ablative patterning of B₄C and MoAlB ceramics for hydrophobic surfaces

Ruiz,

Yoo,

Wadle

et al. 2023

J Am Ceram Soc.

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Through a novel laser ablative patterning (LAP) process, the present work reported the increase in wetting contact angle of two ceramic materials, boron carbide (B4C) and molybdenum aluminum boride (MoAlB). The LAP technique employed picosecond laser pulses to form a crosshatch pattern with micropillars on ceramic surfaces. The wetting behavior of both ceramic surfaces was successfully transitioned from hydrophilic (θ < 90°) to hydrophobic (θ > 90°), which was related to Wenzel and Cassie–Baxter mechanisms. Parameters such as laser fluence and number of laser scans were varied to study their effects on ceramic surface characteristics. Lunar dust adhesion experiments were performed on these hydrophobic ceramic surfaces, which showed that the adhesion of lunar soil simulant dust particles was significantly reduced in the patterned B4C and MoAlB surfaces.

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Section: Surface Characterizationmentioning

confidence: 99%

Laser ablative patterning of B₄C and MoAlB ceramics for hydrophobic surfaces

Ruiz,

Yoo,

Wadle

et al. 2023

J Am Ceram Soc.

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“…(a) Relationship between the roughness and laser fluence. Reproduced from [171] with permission from Elsevier. (b) Relationship between the roughness and pitch.…”

Section: Fabricating Extreme Wetting Surfaces By Laser Surface Texturingmentioning

confidence: 99%

“…Experimental results indicate that the initial hydrophilicity increases after treatment with increasing roughness, which conforms to Equation (2). Moreover, most research reveals that surfaces with high roughness have higher hydrophobicity after appropriate chemical treatment or after exposure to air for several days [154,164,171]. Theoretically, low laser fluence removes less material than high laser fluence, resulting in a more uniform surface, which causes the Wenzel regime to dominate the wettability.…”

Section: Effects Of Laser Parameters On Wettabilitymentioning

confidence: 99%

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Metal surface wettability modification by nanosecond laser surface texturing: A review

Liu

Niu

Lei

et al. 2022

Biosurface and Biotribology

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Laser surface texturing (LST) is a non‐contact manufacturing process for fabricating functional surfaces in a manner that improves the corresponding wettability, and is widely used in biomedicine and industry. Laser surface texturing is a facile approach that is compatible with various materials, can result in a hierarchical texture, and enables a high degree of surface wetting (i.e., extreme wetting). In addition to surface structures, surface chemical modification is a primary factor in producing extreme wetting surfaces. This review discusses the effects of various surface textures and surface chemistries on wettability. Optimal laser parameters for the desired surface texture are based on the fundamental wettability and laser mechanism. In particular, bumps in the morphology are conducive to obtaining extreme wetting. Diverse surface chemical strategies result in extreme wetting by different mechanisms. This paper makes a rigorous evaluation of the laser parameters and optimal surface chemical modifications by elucidating the relationships between the surface structure, surface chemical modification, and wettability, and in so doing, determines the final wettability. The unresolved problems of LST are presented in the conclusion. This review provides guidance, development directions, and an integrated framework for LST, which will be useful for fabricating extreme wetting surfaces on various metals.

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“…Because of its usefulness, titanium and its alloys have been subjected to surface modification through various techniques to change their surface properties [7,8]. Surface structuring through laser irradiation of the titanium substrate modifies surface morphologies by creating multifunctional surfaces and changing a variety of material properties, including wetting [9][10][11], corrosion [4,12,13], tribological [14], antireflective [15], or bacterial adhesion qualities [16,17], among others. It is therefore important to conduct research to establish specific surface modifications of titanium and other materials for a specific application.…”

Section: Introductionmentioning

confidence: 99%

Surface Structuring of the CP Titanium by Ultrafast Laser Pulses

Ronoh,

Novotný,

Mrňa

et al. 2024

Applied Sciences

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Surface structuring by ultrafast lasers is a promising technique to modify surface-related properties of materials to tailor them for specific applications. In the present study, we experimentally investigated the laser structuring of commercially pure titanium (CP Ti) using ultrafast pulses to understand the role of the laser input parameters on the development of surface morphology, optical properties, surface chemistry, and wettability behaviour. The processed surfaces were characterized by a scanning electron microscope, energy-dispersive X-ray spectroscopy (EDX), Raman microscope, optical microscope, and sessile drop method. Laser-induced periodic surface structures decorated with nanodroplets were noted to be formed on the surface of the laser-structured CP Ti. The surface roughness measurements showed that the laser-structured surfaces had nanoscale roughness values. The EDX and the Raman analyses show that laser-structured surfaces of CP Ti have a thin oxide film. Different colours on different surfaces processed by different laser parameters were observed. The wettability assessment shows that CP Ti can transition from hydrophilic–hydrophobic and vice versa depending on the environmental conditions. This study shows that laser structuring can be utilized to modify CP Ti surfaces to obtain desirable surface properties that can find potential applications in different fields.

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Influence of laser fluences and scan speeds on the morphologies and wetting properties of titanium alloy

Cited by 18 publications

References 40 publications

Laser ablative patterning of B₄C and MoAlB ceramics for hydrophobic surfaces

Laser ablative patterning of B₄C and MoAlB ceramics for hydrophobic surfaces

Metal surface wettability modification by nanosecond laser surface texturing: A review

Surface Structuring of the CP Titanium by Ultrafast Laser Pulses

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Influence of laser fluences and scan speeds on the morphologies and wetting properties of titanium alloy

Cited by 18 publications

References 40 publications

Laser ablative patterning of B4C and MoAlB ceramics for hydrophobic surfaces

Laser ablative patterning of B4C and MoAlB ceramics for hydrophobic surfaces

Metal surface wettability modification by nanosecond laser surface texturing: A review

Surface Structuring of the CP Titanium by Ultrafast Laser Pulses

Contact Info

Product

Resources

About

Laser ablative patterning of B₄C and MoAlB ceramics for hydrophobic surfaces

Laser ablative patterning of B₄C and MoAlB ceramics for hydrophobic surfaces