Studies on Dissolution of Metal Element from Flux (Report-I) : Dissolution of Ag to Molten Tin and Tin Base Binary Alloys

概要

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The effect of temperature on transfer of Ag from Ag_3PO_4-SnCl_2 system flux to molten tin (or Sn base binary alloys) was studied. It was influenced on the dissolution of Cu from Cu base metal, which increased with raising temperature. Moreover, in order to know the change in composition of solder after soldering of Cu plates when Ag_3PO_4-SnCl_2 system was used as flux, the transfer of Ag element from the flux and loss of alloying metal containing in solder binary alloys were considered on the basis of the chemical reaction between flux and alloys. The reaction of flux with alloys might be explained by the electro-chemical series of alloying metals in the molten flux containing the alloy. It was made known that the composition of solidified solder was greatly changed by the reaction.
大阪大学の論文