Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (22권4호 168-178)

Composition and Microstrure of Pb-Sn Alloy Electrodeposit

Pb-Sn합금 전착층의 조성 및 조직특성

예길촌;조성제;김용응;김광수;
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영남대학교 금속과;영남전문대학;
영남대학교 금속과;영남전문대학;

Abstract

The compositions and microstructures of Pb-Sn alloy electrodeposits were investigated in terms of the electrolysis conditions conditions by using fluoborate bath. The Pb content of alloy deposit decreased with increasing dreasing current density until the limting content was obtained. The proferred orientation of Pb-phase in the alloy changed in the sequence of (110)longrightarrow(100)longrightarrow(100)+(110)(311)longrightarrowrandom distribution of crystals with increasing cathode overpotential, while that of $eta$-Sn phase was (110)(301)(211)n mixed texture. The smooth surface with granular crystallites was obtained below medium current desity, while the rough surface texture was formed at high current density.

Keywords