Influencing the contact angle during brazing by direct laser interference structured textures on the substrate surface
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
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.
Details
Original language | English |
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Article number | 100129 |
Journal | Materials Letters: X |
Volume | 13 |
Publication status | Published - Mar 2022 |
Peer-reviewed | Yes |
External IDs
ORCID | /0000-0002-8068-0856/work/142250331 |
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Keywords
ASJC Scopus subject areas
Keywords
- Brazing, Contact angle, Direct laser interference patterning, Solder mask, Soldering, Stainless steel