| People | Locations | Statistics |
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| Ferrari, A. |
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| Schimpf, Christian |
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| Dunser, M. |
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| Thomas, Eric |
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| Gecse, Zoltan |
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| Tsrunchev, Peter |
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| Della Ricca, Giuseppe |
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| Cios, Grzegorz |
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| Hohlmann, Marcus |
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| Dudarev, A. |
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| Mascagna, V. |
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| Santimaria, Marco |
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| Poudyal, Nabin |
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| Piozzi, Antonella |
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| Mørtsell, Eva Anne |
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| Jin, S. |
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| Noel, Cédric |
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| Fino, Paolo |
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| Mailley, Pascal |
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| Meyer, Ernst |
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| Zhang, Qi |
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| Pfattner, Raphael | Brussels |
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| Kooi, Bart J. |
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| Babuji, Adara |
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| Pauporte, Thierry |
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Schmauch, Jörg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023Continuous wet chemical synthesis of Mo(C,N,O)x as anode materials for Li-ion batteries†
- 2023Degradation analysis of tribologically loaded carbon nanotubes and carbon onions
- 2023Effects of Ultrashort Pulsed Direct Laser Writing on Ni/Al Reactive Multilayer Foils
- 2021Phase Transformation and Characterization of 3D Reactive Microstructures in Nanoscale Al/Ni Multilayerscitations
- 2021Microstructure analysis of electrospun La0.8Sr0.2MnO3 nanowires using electron microscopy and electron backscatter diffraction (EBSD)
- 2020Thermal stability, phase decomposition, and micro-fatigue properties of pulsed electrodeposited nanocrystalline Co-Cu
- 2019High strength nanocrystalline Cu–Co alloys with high tensile ductilitycitations
- 2016On the process of co-deformation and phase dissolution in a hard-soft immiscible CuCo alloy system during high-pressure torsion deformationcitations
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article
Effects of Ultrashort Pulsed Direct Laser Writing on Ni/Al Reactive Multilayer Foils
Abstract
Reactive multilayer foils (RMFs) for joining processes have attracted a great deal of attention over the last few years. They are capable of exothermic self-propagating reactions and can serve as localized heat sources for joining applications when ignited by suitable means. Using short and ultrashort pulsed lasers with carefully selected parameters, cutting and shaping of RMFs makes it possible to tailor heat release characteristics without triggering the reaction. The present study is an investigation of microstructural changes induced by femtosecond laser machining of a commercially available Ni/Al-based RMF. The effects of the specific laser parameters pulse duration and repetition rate on the heat-affected zone (HAZ) are investigated by scanning and transmission electron microscopy. Debris consisting of oxide deposits can be found at a distance of several tens of microns from the cut edge. A negligible HAZ extending to less than 100 nm was observed for all parameters tested and no signs of ignition of a self-propagating reaction were observed. These results underline the suitability of femtosecond lasers for metal machining with minimal heat input.