Laser Surface Texturing of Metals Using Dynamic Melt Expulsion by Application of Fast Modulated CW-Laser Radiation

  • Laser surface texturing of metals is usually performed using pulsed laser sources. Short and ultrashort pulsed laser systems offer the highest machining quality and processing flexibility. Most of these beam sources however feature relatively low average powers or high system prices. Continuous wave fiber lasers in comparison feature high average powers at moderate costs. In this work the laser power of a continuous-wave fiber laser is rapidly modulated to investigate the possibilities to improve laser surface texturing processes by periodically changing the interaction between the surface tension in the melt pool and the vapor pressure created during high power laser processing. It was found that the intermittent nature of modulated continuous wave laser radiation can improve the melt expulsion from the processing area, leading to high material removal rates and ablation efficiencies while also limiting the heat input into the substrate material.

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Metadaten
Author:Andreas Schkutow, Thomas Frick
DOI:https://doi.org/10.2961/jlmn.2023.02.2009
ISSN:1880-0688
Parent Title (English):Journal of Laser Micro/Nanoengineering
Publisher:Japan Laser Processing Society
Document Type:Article
Language:English
Reviewed:Begutachtet/Reviewed
Release Date:2025/02/17
Volume:18
Issue:2
Pagenumber:4
institutes:Fakultät Maschinenbau und Versorgungstechnik
Institut für Chemie, Material- und Produktentwicklung
Research Themes:Materialien & Produktionstechnik
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