Baumann, R.R.BaumannHeilmann, S.S.HeilmannKöberlin, D.D.KöberlinFüssel, U.U.FüsselLasagni, Andrés-FabiánAndrés-FabiánLasagni2023-01-032023-01-032022https://publica.fraunhofer.de/handle/publica/43051310.1016/j.mlblux.2022.1001292-s2.0-85124181781Direct Laser Interference Patterning (DLIP) is used to generate textured stainless steel surfaces to control the wettability of a liquid nickel-based brazing alloy. The interference of two laser beams leads to periodic line-like structures with a spatial period of 6.0 µm. A maximum structure depth of 2.0 µm is reached by controlling the processing parameters. Moreover, the generation of laser induces periodic surface structures (LIPSS) with a period of ∼ 800 nm is observed on top of the DLIP structures. Depending on the produced texture depth, the contact angle of the molten metal is increased from 13° up to 96°. This allows adjusting the contact angle for various brazing and soldering applications and can also be used as a filler metal stop.enBrazingContact angleDirect laser interference patterningSolder maskSolderingStainless steeljournal article