Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (26권3호 143-148)

Composition and microstructure of Silver-Tin alloy deposits from prophosphate bath

피로인산염욕을 사용한 은-주석 합금도금층의 조성 및 현미경 조직

예길촌;김용웅;김진수;
;;;

영남대학교 금속공학과;
영남대학교 금속공학과;

Abstract

Composition and microstructures of Silver-Tin alloy deposits from a pyrophosphate bath were studied under the D.C. electrolysis conditions. Cathode current efficiency and throwing power of alloy deposits de-creased with increasing current density. Tin content of Ag-Sn alloy deposits decreased noticeably with the cur-rent density and with decreasing pH. The preferred orientation of the deposits tended to change in sequence of (110)longrightarrow(111)longrightarrow(100) texture with increasing the cathode overpotential. The surface structure of alloy deposits showed the smooth surface structure with fine crystallites.

Keywords