Research on the Metal Ablation Thresholds of Picosecond Laser

Jin Peng Duan; Meng Chen; Zhen Xu Bai; Gang Li

doi:10.4028/www.scientific.net/AMM.190-191.547

Paper Titles

Preparation and Properties of Poly-2,5-dihydroxyaniline/Activated Carbon Composite Electrode
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Preparation of TiO₂-Pillared Montmorillonite as Photocatalyst and Photocatalytic Degradation of Methyl Orange
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Production Practice of Hot-Rolled Thin Plate of 30CrMo Steel in WISCO
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Research on Interfacial Cracking of a Cr Coating/Steel Substrate with and without Laser Pre-Quenching Treatment under Thermal Fatigue Loading
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Research on the Metal Ablation Thresholds of Picosecond Laser
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Strength Analysis and Calculation of JJ225/42-KC Type Oil Rig Derrick
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Study of Magnetic Performance of Co₂Z Hexaferrite Doped with Nd³⁺
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Study on Pyrolysis Characteristic of the Waste Tires
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Study on TiCN/Ti Based Composite Coating Fabricated by Reactive Electric Spark Deposition
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 190-191Research on the Metal Ablation Thresholds of...

Research on the Metal Ablation Thresholds of Picosecond Laser

Abstract:

Detailed studies on the ablation threshold of Mo with picosecond laser pulses are reported in this paper. The laser pulses used for the research were 1064 nm in wave length and 15 ps in pulse duration. Scanning electronic microscope (SEM) and optical surface analyzer were used to analyze the ablation sample, and by analyzing the linear relationship between the squared diameter of ablation crater and pulses energy we obtained the ablation threshold of Mo with single- and multi-pulses. Influence factors of ablation threshold were observed while analyzing machining process. Finally, the shape and topography of holes drilled by percussion with ablation regularity in Mo were studied, which provided an important guidance for the following applications on picosecond micro-machining.