压延铜箔的无氰电镀锌黑化处理工艺  

Cyanide-Free Electro-Galvanizing Blackening Process of Rolled Copper Foil

作　　者：饶翔 刘新宽[1] RAO Xiang;LIU Xin-kuan(College of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学材料与化学学院,上海200093

出　　处：《材料保护》2022年第5期123-128,共6页Materials Protection

摘　　要：为了研究出无氰环保,且工艺成本低的压延铜箔黑化工艺,以45.4~79.5 g/L Zn^(2+),20.0~30.0 g/L柠檬酸钠,30.0~50.0 g/L硼酸和5.0~15.0 g/L硫酸铵为基础镀液成分,通过加入添加剂A(表面活性剂)和添加剂B(抑制剂),在压延铜箔表面形成陷光结构,从而实现了无氰电镀锌黑化。研究了镀液成分及工艺参数对镀层亮度(L^(*))的影响,并对黑化箔的电导率、粗糙度、高温抗氧化性等性能进行了测试。研究表明:镀锌黑化箔的电导率优于镀镍黑化箔,粗糙度(R_(z))大于1.3μm的锌镀层的亮度符合黑化要求且满足低轮廓铜箔的标准,镀锌黑化箔的高温抗氧化性也达到了要求。For developing a cyanide-free, environmentally friendly and low-cost rolled copper foil blackening process, 45.4~79.5 g/L Zn^(2+), 20.0~30.0 g/L sodium citrate, 30.0~50.0 g/L boric acid and 5.0~15.0 g/L ammonium sulfate were used as the basic bath components to form a light trapping structure on the surface of the rolled copper foil by adding additive A(surfactant) and additive B(inhibitor), so as to realize the blackening of cyanide-free electro-galvanizing. Moreover, the influences of bath composition and process parameters on the brightness(L^(*)) of the coating were studied, and the electrical conductivity, roughness, high-temperature oxidation resistance and other properties of the blackened foil were tested. Results showed that the electrical conductivity of galvanized blackened foil was better than that of the nickel-plated blackened foil, and the brightness of zinc coating with a roughness(R_(z)) greater than 1.3 μm could meet the blackening requirements and as well as standards regarding low-profile copper foil. Furthermore, the galvanized blackened foil also met the high temperature oxidation resistance requirements.

关 键 词：压延铜箔 无氰电镀 镀液成分 工艺参数 

分 类 号：TG178[金属学及工艺—金属表面处理]