摘要
通过赫尔槽试验和方槽试验研究了新型添加剂K.1(胺类与环氧化合物的缩合物)用于焦磷酸盐溶液体系电镀白铜锡的镀液组成和工艺。结果表明,最佳镀液组成和工艺条件为:K4P207。3H20300g/L,Sn2P2078g/L,Cu2P2074H2012g/L,添加剂K-12.4~4.0mL/L,还原剂2g/L,pH8.5~9.5,电流密度0.7~1.2A/din2,温度25℃。添加剂K.1作为光亮剂,具有细化晶粒的作用,但不具有整平能力,其用量为0.8~4.0mL/L时均能得到sn含量为45%~55%的白铜锡镀层。
The bath composition and process conditions of white copper-tin electroplating from pyrophosphate electrolyte containing a novel additive K-1 (condensation polymer of amines and epoxy compounds) were studied through Hull cell test and square cell test. It is shown that the optimal bath composition and process conditions are: K4P2OT3H20 300 g/L, Sn2P207 8 g/L, Cu2P2OT4H20 12 g/L, additive K-1 2.4-4.0 mL/L, reductant 2 g/L, temperature 25 ℃, pH 8.5-9.5, and current density 0.7-1.2 A/dm2. As a brightener for the present electroplating process, Additive K-1 refines grains but has no leveling effect. White copper-tin alloy coatings with Sn content of 45%-55% can be obtained when 0.8-4.0 mL/L K-1 is used.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2015年第4期171-175,共5页
Electroplating & Finishing
关键词
白铜锡合金
电镀
焦磷酸盐
添加剂
white copper-tin alloy
electroplating
pyrophosphate
additive
作者简介
郭艳(1988-),女,河南商丘人,在读硕士研究生,主要研究方向为应用电化学。
通信作者:曾振欧,教授,(E-mail)zhouzeng@scut.edu.cn。