Mechanism and morphology control of underwater femtosecond laser microgrooving of silicon carbide ceramics

Zheng, Qinsi; Fan, Zhengjie; Jiang, Gedong; Pan, An; Yan, Zhaoxuan; Lin, Qingyan; Cui, Jianlei; Wang, Wenjun; Mei, Xuesong

doi:10.1364/oe.27.026264

Cited by 58 publications

(14 citation statements)

References 43 publications

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“…Also, a similar trend is observed with peak power. This situation is attributed to the two dominant effects of a high pulse repetition rate 40 – 43 . The effects are associated with the shortening of the time interval between two successive pulses.…”

Section: Resultsmentioning

confidence: 99%

Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs

Musse

Lee

2023

Sci Rep

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A laser processing technique is proposed for the processing of a 2.5 mm thick carbon nanotube (CNT) composite bipolar plate for proton exchange membrane fuel cells (PEMFCs). This study aims to understand laser interaction with the CNT composite plate experimentally using a pulsed nanosecond laser. Penetration depth, top width, spatter width, and overall physical morphologies are studied. Scanning electron microscope (SEM) and 3D Scanning Confocal Microscope were used for observation and measurements. Based on that, a parametric investigation is conducted and reported systematically. Most importantly, the pulse repetition rate presents a unique nature of interaction that resulted in a critical repetition rate distinguishing three operational regimes. The physical and chemical properties of the regimes are further analyzed by Vickers microhardness testing and energy dispersive X-ray (EDX) analyses performed on the surface and cross-section of each specimen. The results reveal that the pulse repetition rate introduces changes in mechanical properties and chemical compositions in the vicinity of the processed region. In conclusion, lower pulse repetition should be favored for less impact on mechanical properties, chemical composition, and morphological aspects.

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Section: Resultsmentioning

confidence: 99%

Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs

Musse

Lee

2023

Sci Rep

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“…In this experiment, the XRD results indicated that the sintered translucent zirconia specimen appeared to be amorphized after the FSL treatment, which may have been caused by the phenomenon of "avalanche ionization" during interaction of the high-power and high-repetition FSL with the zirconia specimen surface, resulting in high-speed motion [36]. The hypothesis is that the plasma carries a certain element, which is deposited on the surface of the specimen to form a coating, resulting in amorphization [37]. It is also possible to form salt crystals on the surface of the ceramic; however, the interfacial topography between the "amorphized" zirconia layer after FSL and the substrate was not investigated, and further experimental verification is required.…”

Section: Discussionmentioning

confidence: 99%

Changes in Crystal Phase, Morphology, and Flexural Strength of As-Sintered Translucent Monolithic Zirconia Ceramic Modified by Femtosecond Laser

Liang

Yuan

2021

Applied Sciences

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Conventional bonding technology suitable for silica-based ceramics is not applicable to zirconia, due to its polycrystalline phase composition, chemical stability, and acid corrosion resistance. The development of an effective treatment to improve its surface roughness and mechanical properties remains an unresolved problem. Therefore, to solve this problem, this in vitro study evaluated the changes in surface morphology and flexural strength of translucent monolithic zirconia surfaces treated with femtosecond laser technology. As-sintered translucent zirconia specimens were subjected to airborne particle abrasion and femtosecond laser treatments, while control group specimens received no treatment. After treatment, the roughness and morphology of the treated zirconia surfaces were examined. The flexural strength and X-ray diffraction of the treated specimens were measured and analyzed. Statistical inferential analysis included one-way analysis of variance at a set significance level of 5%. The surface roughness after femtosecond laser treatment was significantly improved when compared with the control group and the group that received the airborne particle abrasion treatment (p < 0.05). In comparison with the airborne particle abrasion group, the flexural strength of the group that received the femtosecond laser treatment was significantly improved (p < 0.05). The femtosecond laser approach using appropriate parameters enhanced the roughness of the zirconia without reducing its flexural strength; therefore, this approach offers potential for the treatment of zirconia surfaces.

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“…Laser parameters, including laser energy, laser frequency, the scanning speed, and the number of scans, have a substantial effect on the crater size [100,101]. The depth of the microgroove increased with a frequency between 10 and 50 kHz and a pulse energy of 25 µJ saturated, as shown in Figure 6f, and decreased at a 55 µJ pulse energy or a 100 kHz frequency.…”

Section: Pulse Laser Ablation Processing With Liquidsmentioning

confidence: 94%

“…Oil has a stronger thermal resistance than water, and alcohol has a lower collapse limit than water, which could counter water's limitations as a medium [49,100,102,103]. Zhang et al [88] used the oil processing medium to improve the processing quality and tribological properties of textured surfaces.…”

Section: Pulse Laser Ablation Processing With Liquidsmentioning

confidence: 99%

Design Methodology and Application of Surface Texture: A Review

Kouediatouka

Liu

et al. 2022

Coatings

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Surface texture is regarded as a promising solution for enhancing the tribological features of industrial materials due to its outstanding benefits, such as minimization of the contact area, enhancement of the load bearing capacity, storage of the lubricant, and management of the transition between lubrication regimes. Surface texture can be processed under either liquid or gas conditions. As compared to laser ablation in air, employing liquids or other gases as ablation media provides high accuracy and uniformity by limiting the heat-affected zone (HAZ) and other undesired defects to a large extent, as well as high crater structural features. In addition, the synergistic use of different liquid, solid, and additive lubricants with surface roughness recently demonstrated excellent performance. Therefore, surface texture helps to improve the tribological characteristics of a material. This paper reviews the design methodologies and applications of surface texture, emphasizing the proper selection of the appropriate laser parameters and ambient conditions for the best texture quality and functionality. Recent texture geometric design features to improve the film thickness and the self-lubricating system are presented. The ablation environment is explored using various media. The interaction between the lubricants’ types and surface textures is explored based on the operating conditions. Furthermore, surface texture applications using superhydrophobic surfaces, anti-drag, and vibration and noise friction are discussed. We hope that this review plays an enlightening role in follow-up research on laser surface texture.

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Mechanism and morphology control of underwater femtosecond laser microgrooving of silicon carbide ceramics

Cited by 58 publications

References 43 publications

Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs

Parametric study of pulsed nanosecond laser interaction with carbon-nanotube composite bipolar plate for PEMFCs

Changes in Crystal Phase, Morphology, and Flexural Strength of As-Sintered Translucent Monolithic Zirconia Ceramic Modified by Femtosecond Laser

Design Methodology and Application of Surface Texture: A Review

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