研究目的
Investigating the fabrication of high-density microcones on reaction-bonded silicon carbide (RB-SiC) by nanosecond pulsed laser irradiation to enhance surface properties such as wettability, reflectivity, and friction coefficient.
研究成果
The study successfully fabricated self-organized microcones on RB-SiC using nanosecond pulsed laser irradiation, making the surface superhydrophilic. Key findings include the influence of laser parameters on cone formation and the material composition of the cones. Future studies should focus on optimizing laser parameters for better cone aspect ratios and exploring the fabrication of SiC conical structures.
研究不足
The study is limited by the technical constraints of laser parameters and the need for optimization to avoid ablation and adhesion of silicon at higher fluences. Potential areas for optimization include improving the aspect ratio of conical structures and fabricating SiC conical structures.
1：Experimental Design and Method Selection:
Utilized nanosecond pulsed Nd:YAG laser irradiation (λ = 532 nm) on RB-SiC to fabricate microcones. Studied the effect of laser parameters like pulse frequency, fluence, and scanning path.
2：Sample Selection and Data Sources:
RB-SiC samples with a diameter of 70 mm and height 15 mm, polished to a mirror finish for analysis.
3：List of Experimental Equipment and Materials:
LR-SHG laser (Nd:YAG laser) from Mega Opto Co., Ltd., Japan, and Super pulse 532-30 (Nd:YVO4 laser) from Suzhou Inngu Laser Co., Ltd., China. Scanning electron microscope (SEM), laser microscope, EDAX spectroscopy, and Raman spectroscopy for analysis.
4：Experimental Procedures and Operational Workflow:
Laser beam scanning controlled using a galvanometer scanner system. Experiments carried out in atmospheric conditions with varying laser parameters.
5：Data Analysis Methods:
SEM and laser microscopy for surface topography, EDAX and Raman spectroscopy for material composition, and contact angle measurement for wettability.
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