Volume 9, 2022
|Number of page(s)||9|
|Published online||08 February 2022|
Influence of laser surface structuring of steel sheets on the mechanical properties of electrodeposited ZnNi coatings
ZF Friedrichshafen Group, Car Chassis Technology, Dr.-Jürgen-Ulderup-Str.7, 32351 Stemwede, Germany
2 Fraunhofer-Institute for Manufacturing Technology and Applied Materials Research (IFAM), Adhesion and Interface Research, Wiener Str.12, 28359 Bremen, Germany
* e-mail: firstname.lastname@example.org
Accepted: 23 January 2022
The influence of laser surface structuring on the formation and the internal strength of electrodeposited ZnNi coatings on steel sheets was investigated. Surface structuring by extended direct laser interference patterning (xDLIP) was used to modify the cohesive strength in the ZnNi layer. An SEM analysis of the crystal structures shows perpendicular nucleation during ZnNi layer formation and areas of crosslinked crystalline structures, which results in an interlocking of crystal structures within the layer. The interlocked crystalline structure leads to an increase of the cohesive strength in the ZnNi layer, which was observed in roller peel tests according to DIN 1464 for adhesively bonded joints.
Key words: Laser structuring / ZnNi coating / layer structure / adhesive bonding / roller peel test
© C. Stelter and S. Dieckhoff, Published by EDP Sciences 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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