Advanced remote laser cutting of battery foils using an interference approach
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
This work demonstrates how an interference pattern can improve the performance of remote laser cutting of pure copper foils, making the cutting process effective even for a low power laser source. The proof of concept is carried out by using a nanosecond laser source with a pulse duration of 5 ns, coupled with a two-beam scanning interference setup, producing a spatial period of 12.5 µm. In the experiments, processing parameters as pulse-to-pulse distance, laser power and scanning speed are varied, to optimize the foil breakthrough and their effect on the generated material modifications are investigated. A comparison between the processing results employing the interference pattern and single beam with a Gaussian energy distribution is carried out. While the single beam process is not sufficient for cutting a 10 µm thin metallic foil, the interference treatment shows an improvement over 100%. In addition, only small spatter formations are detected, with average particle sizes of 1.75 ± 0.82 µm on the top side of the foil. The bottom side of a fully separated copper foil only depicts small spatter formations of less than 1 µm.
Details
Originalsprache | Englisch |
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Aufsatznummer | 100138 |
Seitenumfang | 4 |
Fachzeitschrift | Materials Letters: X |
Jahrgang | 14 |
Frühes Online-Datum | 5 Apr. 2022 |
Publikationsstatus | Veröffentlicht - Juni 2022 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 85127685718 |
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Schlagworte
Schlagwörter
- Copper foils, Cutting, Direct laser interference patterning, Surface treatment