József Hlinka , Zoltán Weltsch ,


The article aims to discuss the effect of surface treatment on the wettability between DC01 steel and SAC305 lead-free solder paste. The industrial applications of laser technologies are increasing constantly. A specific laser treatment can modify the surface energy of steel and affect the wetting properties. The surfaces of steel plates were treated by Nd:YAG laser with different laser powers. After the laser surface treatment wetting experiments were performed between the steel plates and lead- free solder paste. The effect of laser treatment on steel surface microstructure was analyzed by optical microscopy The experimental results showed that the wetting contact angles do not change up to 700 W laser power.


Keywords: laser treatment, solder paste, soldering, steel, wettability,


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