Nanosecond Laser Ablation of Ti–6Al–4V under Different Temperature

Zhao, Jiahe; Zhu, Zhiwei; Xu, Yacheng; Song, Xueyong; Wang, Yufan; Peng, Hao; Wang, Ying; Zuo, Jinrong; Shu, Xuedao; Yin, Anmin

doi:10.3390/app10134657

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…This ablation mechanism is characterised by the displacement of molten material to edge of the laser impacted area. This displacement generates ripples and molten material massing on the edge of the dimples to create the crests [48][49][50][51]. These structures remain after the laser pulse owing to the quick temperature changes of the laser shot area.…”

Section: Surface Morphologymentioning

confidence: 99%

Effect of Surface Roughness on the Surface Texturing of 316 l Stainless Steel by Nanosecond Pulsed Laser

Al-Mahdy

Kotadia

Sharp

et al. 2022

Lasers Manuf. Mater. Process.

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Stainless steel 316L is an austenitic alloy that is widely used in varying industries due to its outstanding corrosion resistance, high strength, and ductility properties. However, the wear and friction resistance properties are low. Laser surface texturing can improve the wear and friction resistance of the material via the functionalisation of the surface. The laser surface texturing efficiency and the texture quality are defined by the material’s surface properties and laser parameters. The surface roughness is an important material property having an effect on laser surface texturing. This paper reports on a study of the material’s surface roughness influence on the texturing of 316L stainless steel with 1064 nm nanosecond pulsed laser. Single pulse shots were employed to avoid the topographic influence of the previous laser shots. The surface shape and the topography of the textures were assessed using optical microscopy and profilometry. It was observed that the textures produced were dimples of U-type and sombrero-like type geometries depending on surface roughness and pulse energy. The overall quality of the texture shape was better for smoother surfaces. The energy fluence necessary to generate textures is lower on surfaces of lower roughness than surfaces with high roughness. The surface at 24 nm of average roughness is the best surface for creating deep textures. The ablation mechanisms associated with high pulse energy, including plasma shielding, are produced at lower pulse energies for the 100 nm roughness, compared with other roughness samples.

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Section: Surface Morphologymentioning

confidence: 99%

Effect of Surface Roughness on the Surface Texturing of 316 l Stainless Steel by Nanosecond Pulsed Laser

Al-Mahdy

Kotadia

Sharp

et al. 2022

Lasers Manuf. Mater. Process.

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show abstract

“…CW and ultra-short laser sources present remarkable differences in optical damage [5]. Particularly, potential actions of optical nonlinearities [6], shock waves [7], plasma phenomena [8], or temperature conditions [9] can be responsible for the dynamics of photoenergy transfer exhibited by high-irradiance phenomena. On the other hand, the pulse repetition rate in photodamage can play a crucial role associated with the physical mechanisms of thermal transport in optical materials [10].…”

Section: Introductionmentioning

confidence: 99%

Sequential Photodamage Driven by Chaotic Systems in NiO Thin Films and Fluorescent Human Cells

et al. 2020

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A laser ablation process assisted by the feedback of a sensor with chaotic electronic modulation is reported. A synchronous bistable logic circuit was analyzed for switching optical signals in a laser-processing technique. The output of a T-type flip-flop configuration was employed in the photodamage of NiO films. Multiphotonic effects involved in the ablation threshold were evaluated by a vectorial two-wave mixing method. A photoinduced thermal phenomenon was identified as the main physical mechanism responsible for the nonlinearity of index under nanosecond irradiation at 532 nm wavelength. Comparative experiments for destroying highly transparent human cells were carried out. Potential applications for developing hierarchical functions yielding laser-induced controlled explosions with immediate applications for biomedical photothermal processes can be contemplated.

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Continuous wave laser ablation for tailored titanium nanoparticle synthesis: temperature and liquid medium effects

Ali,

Su,

Tan

et al. 2024

Int J Adv Manuf Technol

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We reported for the first time the generation of titanium (Ti) nanoparticles (NPs) in different liquids (deionized (DI) water and sodium dodecyl sulfate (SDS) solution) and at a range of temperatures (5 °C, 28 °C, 60 °C, and 80 °C) using continuous-wave high-power laser ablation in liquid (CWLAL). The CWLAL technique is a convenient and cost-effective way to generate NPs. The key outcomes of our investigation are the effects of temperature and the liquid mediums on the average size, generation rate, shape, surface charges, and crystallographic structure of the NPs. Generated NPs show consistent spherical shape regardless of liquid medium changes and temperature variation. SDS solution notably impacts NP size and generation rate with higher surface charges than DI water. For instance, at temperatures of 28 °C and 80 °C, the generation rates in SDS solution are 316 mg/hr and 309 mg/hr, with average NP sizes of 33 nm and 34 nm, respectively. In contrast, the generation rates in DI water are 96 mg/hr and 302 mg/hr, with NP sizes of 13 nm and 20 nm, respectively. The weaker crystallographic structure observed in NPs generated in SDS solution, compared to the more robust crystallographic structure of NPs synthesized in DI water. Liquid temperature plays a significant role in determining surface charges, average particle size, and molecular structure of NPs. The choice of the liquid medium and temperature can be critical for tailoring NP characteristics to specific applications. Ongoing work is being conducted to explore the possibilities of further progress in this area to generate efficient and customized NPs.

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Nanosecond Laser Ablation of Ti–6Al–4V under Different Temperature

Cited by 6 publications

References 24 publications

Effect of Surface Roughness on the Surface Texturing of 316 l Stainless Steel by Nanosecond Pulsed Laser

Effect of Surface Roughness on the Surface Texturing of 316 l Stainless Steel by Nanosecond Pulsed Laser

Sequential Photodamage Driven by Chaotic Systems in NiO Thin Films and Fluorescent Human Cells

Continuous wave laser ablation for tailored titanium nanoparticle synthesis: temperature and liquid medium effects

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