A Comparative Study of Tin-Nickel Alloys Obtained by Electroplating and Casting

摘要

Electrochemical reduction of Sn-Ni alloys from chloride-fluorite and diphosphate baths has been studied. The effect of depolarization of both nickel and tin reduction for Sn-Ni alloys formation has been revealed. It has been determined that Sn-Ni alloy electroplated from chloride-fluorite bath contains metastable phase of the intermetallic compound NiSn. This phase composition differs from that of its cast analogue. The Sn-Ni alloy electroplated from diphosphate bath contains stable phases of Sn, Ni_3Sn_2 and Ni_3Sn_4. This composition coincides fully with the composition of its cast analogue.