Influencing the contact angle during brazing by direct laser interference structured textures on the substrate surface

Research output: Contribution to journalResearch articleContributedpeer-review



Direct 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.


Original languageEnglish
Article number100129
JournalMaterials Letters: X
Publication statusPublished - Mar 2022

External IDs

ORCID /0000-0002-8068-0856/work/142250331



  • Brazing, Contact angle, Direct laser interference patterning, Solder mask, Soldering, Stainless steel