Distribution and avoidance of debris on epoxy resin during UV ns-laser scanning processes
| Autor: | Markus Veltrup, Jörg Ihde, Bernd Mayer, Thomas Lukasczyk |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Laser ablation Materials science Laser scanning General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry Epoxy Nanosecond 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 01 natural sciences Fluence Surfaces Coatings and Films law.invention law visual_art 0103 physical sciences visual_art.visual_art_medium Particle Composite material 0210 nano-technology Particle density |
| Zdroj: | Applied Surface Science. 440:1107-1115 |
| ISSN: | 0169-4332 |
| Popis: | In this paper the distribution of debris generated by a nanosecond UV laser (248 nm) on epoxy resin and the prevention of the corresponding re-deposition effects by parameter selection for a ns-laser scanning process were investigated. In order to understand the mechanisms behind the debris generation, in-situ particle measurements were performed during laser treatment. These measurements enabled the determination of the ablation threshold of the epoxy resin as well as the particle density and size distribution in relation to the applied laser parameters. The experiments showed that it is possible to reduce debris on the surface with an adapted selection of pulse overlap with respect to laser fluence. A theoretical model for the parameter selection was developed and tested. Based on this model, the correct choice of laser parameters with reduced laser fluence resulted in a surface without any re-deposited micro-particles. |
| Databáze: | OpenAIRE |
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