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Sandwich-type reaction couples, Sn/Ni/Sn and Sn/Ag/Sn, were prepared. Two kinds of experiments were conducted: with and without the passage of a direct electric current through the couple. The specimens were placed in a furnace for pre-determined lengths of time at 180 and 200 o C for the Sn/Ni/Sn system and 160 o C for Sn/Ag/Sn. The current density was 500Acm -2 . The...
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