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Laser textured Ti and its alloys are found to be very promising for the bioimplants. For large area texturing, width of the laser textured region in single scan is a vital parameter. This width is strongly dependent on sample scanning velocity as well as energy of laser pulses. In all previous works, there is no information regarding variation of width of line-shaped generated structures on Ti with changing sample scanning speed and laser pulse energy. We therefore have done systematic study on variation of width of the line processed region w.r.t. changing laser pulse energy as well as scanning speed processing. Particularly, two types of experiments were done. In the first type, experiment was done for observation of variation of width of line-shaped structures by changing scanning speed keeping the laser pulse energy constant. Particularly, it was done in linear line scanning mode with a speed of 0.5, 2.5, 5, 10 and 20 mm/s keeping laser pulse energy constant at 7.66 µJ. The second type of experiment was done for the study of surface structures behaviour by changing laser pulse energy. Particularly the changed energies were 69, 138, 207, 276 and 345 µJ keeping speed constant at 0.5 mm/s. Morphology of the generated structures was analysed through optical microscopy and field emission scanning electron microscopy (FESEM). Efforts have been taken into establishing correlation between variation of line-shaped generated structures with changing scanning speed and pulse energy. Very uniform large area texturing of Ti surface is also demonstrated by working in the optimized conditions.

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Effect of Laser Pulse Energy, Sample Scanning Velocity on Width of Line-Shaped Laser Processed Region and Large Area Highly Uniform Microstructure Generation on Ti Surface Through Direct Writing

  • 会议论文

  • 发表日期：

    2025年

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  • A. Mundamajhi,
  • S. K. S. Parashar,
  • S. K. Das

摘要

Laser textured Ti and its alloys are found to be very promising for the bioimplants. For large area texturing, width of the laser textured region in single scan is a vital parameter. This width is strongly dependent on sample scanning velocity as well as energy of laser pulses. In all previous works, there is no information regarding variation of width of line-shaped generated structures on Ti with changing sample scanning speed and laser pulse energy. We therefore have done systematic study on variation of width of the line processed region w.r.t. changing laser pulse energy as well as scanning speed processing. Particularly, two types of experiments were done. In the first type, experiment was done for observation of variation of width of line-shaped structures by changing scanning speed keeping the laser pulse energy constant. Particularly, it was done in linear line scanning mode with a speed of 0.5, 2.5, 5, 10 and 20 mm/s keeping laser pulse energy constant at 7.66 µJ. The second type of experiment was done for the study of surface structures behaviour by changing laser pulse energy. Particularly the changed energies were 69, 138, 207, 276 and 345 µJ keeping speed constant at 0.5 mm/s. Morphology of the generated structures was analysed through optical microscopy and field emission scanning electron microscopy (FESEM). Efforts have been taken into establishing correlation between variation of line-shaped generated structures with changing scanning speed and pulse energy. Very uniform large area texturing of Ti surface is also demonstrated by working in the optimized conditions.