摘要
在摩尔比为1∶2的氯化胆碱-尿素低共熔溶剂(ChCl-Urea DES)中于纯铜基体表面制备了锌镀层。通过调整沉积电位、沉积温度和锌盐配比等参数,采用正交实验优化了电沉积工艺,并通过动电位极化曲线对比研究了ChCl-Urea DES和传统水溶液中锌镀层的耐蚀性能。采用扫描电子显微镜(SEM)和X-射线衍射技术(XRD)对ChCl-Urea DES中锌镀层的微观形貌和物相组成进行了表征。结果表明,在摩尔比为1∶2的ChCl-Urea DES中锌电沉积的最佳方案为沉积电位1.0 V、锌盐配比2ZnCl_(2)∶1ZnO(摩尔比)、沉积温度70℃。在此方案下可获得均匀平整,颗粒致密的锌镀层,且其耐蚀性与传统水溶液相当。SEM表明,锌镀层是由排列紧密的六方形立体结构的灰白色颗粒物质构成。XRD表明,锌镀层主要由六方结构的多晶锌组成。
A zinc coating was prepared on a pure copper substrate in a ChCl-Urea deep eutectic solvent(ChCl-Urea DES)with a molar ratio of 1∶2.The electrodeposition process was optimized by orthogonal experiments by adjusting the deposition potential,deposition temperature,and zinc salt ratio.The microscopic morphology and phase composition of the zinc coating in ChCl-Urea DES were characterized by scanning electron microscopy(SEM)and X-ray diffraction(XRD).The results show that the best solution for zinc electrodeposition in ChCl-Urea DES with a molar ratio of 1∶2 is a deposition potential of 1.0 V,a zinc salt ratio of 2ZnCl_(2)∶1ZnO(molar ratio),and a deposition temperature of 70°C.The results show that a homogeneous and flattened surface can be obtained with this solution.SEM shows that the zinc coating is composed of grayish-white granular material with a tightly arranged hexagonal three-dimensional structure,while XRD shows that the zinc coating is mainly composed of polycrystalline zinc with a hexagonal structure.
作者
孙海静
杨帅
王贺
徐飞
杜俊荣
王媛媛
毕铭雪
从铭玥
孙杰
SUN Haijing;YANG Shuai;WANG He;XU Fei;DU Junrong;WANG Yuanyuan;BI Mingxue;CONG Mingyue;SUN Jie(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China)
出处
《电镀与精饰》
CAS
北大核心
2021年第11期23-28,共6页
Plating & Finishing
基金
辽宁省教育厅青年科技人才“育苗”项目(LG201928)
辽宁省沈阳材料科学国家研究中心联合研发基金项目(2019JH3/30100021)
沈阳理工大学大学生创新创业计划项目(201910144005)。
关键词
低共熔溶剂
离子液体
电沉积
锌
耐蚀性
deep eutectic solvent
ionic liquid
electrodeposition
zinc
corrosion resistance
