Tin-cobalt alloy plating in a pyrophosphate bath

被引：8

作者：

Cho, SK ^{[1
]}

Han, HS

Lee, CK

Ahn, CI

Park, JI

机构：

[1] Yonsei Univ, Seoul 120749, South Korea

[2] Agcy Technol & Stand, MOCIE, Kwacheon 427010, Kyonggi Do, South Korea

来源：

ECO-MATERIALS PROCESSING & DESIGN | 2003年 / 439卷

关键词：

tin-cobalt alloy plating;

D O I：

10.4028/www.scientific.net/MSF.439.57

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examined bath composition, plating condition and plating process of tin-cobalt alloy deposits substituting chromium plating. It has been also investigated and reviewed surface characteristics, corrosion resistance, impurity influence, and abrasion utilizing pilot plant after investigating reviewing cathodic polarization curve, corrosion resistance and SEM through Hull-cell and beaker test. As a result, it was found that basic bath composition of tin-cobalt alloy plating is SnCl2.2H(2)O (0.03M), CoSO4.7H(2)O (0.05M), K4P2O7 (0.7M). It has been also found that surface of plating is best when plating condition is current density (1A/dm2), solution temperature (50 degreesC), pH8 with current efficiency of 70similar to73% and plating rate of 0.2 mum/min. Tin-cobalt alloy plating is at least equal to, or better than chromium plating in adhesion and tarnish test, while chromium plating is better than tin-cobalt alloy plating in corrosion resistance and abrasion test.

引用

页码：57 / 61

页数：5