Reaction of Iron-based Alloys with Molten Lead-free Solder(Materials, Metallurgy & Weldability)

概要

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The reaction between molten lead-free solder and iron-based alloys has been investigated by evaluating the dissolution rate of iron-based alloys in molten solders. The dissolution rate of these alloys used for plating on the tips of soldering irons and container materials of soldering baths are about three times larger when tested in lead-free solder than in conventional Sn-Pb eutectic, which indicates that the iron plating of soldering iron tipsS and container materials for soldering baths are subject to heavy damage in lead-free solders than in Sn-Pb eutectic. The rate showed little dependence on iron based alloy composition. Homogeneous dissolution was observed in all specimens including alloyed steels. A decrease in reaction temperature and time and a small addition of iron into solder were found to be effective for the suppression of dissolution.
大阪大学の論文