六次甲基四胺对电镀锌表面形貌及形核机理的影响研究  

Influence of hexamethylenetetramine on morphology and nucleation mechanism for Zn-electrodeposition

作　　者：黄道兵[1,2] 蔡捷[1] 冯冠文[1] 董蓓[1] 杨成志 涂元强[1] HUANG Daobing CAI Jie FENG Guanwen DONG Bei YANG Chengzhi TU Yuanqiang(Research and Development Center of WISCO, Wuhan 430080, China School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China Cold Rolling General Plant of WISCO, Wuhan 430081, China)

机构地区：[1]武钢研究院,湖北武汉430080 [2]华中科技大学材料科学与工程学院材料化学与服役失效湖北省重点实验室,湖北武汉430074 [3]武钢冷轧总厂,湖北武汉430084

出　　处：《武钢技术》2017年第1期36-38,共3页Wisco Technology

摘　　要：应用扫描电镜(SEM)、暂态电流电化学方法研究了六次甲基四胺(HMTA)对冷轧钢板在442g/L ZnSO4·7H2O镀液中电沉积锌层表面形貌及形核生长机理的影响,结果表明:HMTA的加入不影响电镀锌形核及生长机理:锌层结晶形核及生长遵循3D生长的瞬时形核机理;随着电沉积过电位的增大,添加HMTA的锌层结构由初始的片层状紧密排列的六方晶粒,变为晶粒更为精细的锥状结构。The influence of hexamethylenetetramine （HMTA） on the morphology and nucleation mechanism for zinc electrodeposition on steel sheet was investigated using scanning electron microscopy （SEM） and potentiostatic electrochemical techniques. From the analysis of the chronoamperometric transients and the SEM images, an instantaneous nucleation with 3D growth has been proposed in both baths with and without HMTA. It was found that the morphology of zinc electrodeposits varied from initial thin-layered hexagonal plates to a denser plate and ridge morphologies with increasing the overpotential as HMTA was added in the bath solution.

关 键 词：电沉积 形核机理 硫酸盐镀液 

分 类 号：TG174.441[金属学及工艺—金属表面处理]