研究目的
Investigating the effect of laser fluence and pulse overlap while developing microchannels in alumina ceramic using an Nd:YAG laser.
研究成果
The study concludes that both laser fluence and pulse overlap are significant parameters in controlling the quality and dimensional accuracy of microchannels. A laser peak fluence of around 125–130 J/cm2 corresponding to 3–5 μm depth per scan is recommended for better accuracy. Low depth per scan values with a greater number of laser scans are recommended to achieve the desired depth.
研究不足
The study is limited to the use of an Nd:YAG laser in the microsecond range for developing microchannels in structural ceramics. The effects of other laser types or pulse widths were not investigated.
1：Experimental Design and Method Selection:
The study investigates the effect of laser fluence and pulse overlap on the development of microchannels in alumina ceramic using an Nd:YAG laser.
2：Sample Selection and Data Sources:
Alumina (Al2O3,
3：7%) samples of dimensions 50 × 50 × 10 mm were used as the workpiece material. List of Experimental Equipment and Materials:
The experimental setup used was lasertec-40 from Deckel Maho Gildemeister, Germany, equipped with a Flashlamp pumped Nd:YAG laser with a wavelength of 1064 nm and maximum power of 30 W.
4：Experimental Procedures and Operational Workflow:
Microchannels of dimension 200 μm width and 5 mm length were machined by varying the laser fluence at three different pulse overlaps 58%, 67%, and 75%.
5：5%. Data Analysis Methods:
5. Data Analysis Methods: The microchannels were analyzed with respect to material removal rate (MRR) and width error, that is the difference between the actual width and the target width.
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