SUN Haijing,YANG Shuai,WANG He,et al.Study on the Technology of Zinc Electrodeposition in ChCl-Urea Deep Eutectic Solvent[J].Plating & Finishing,2021,(11):23-28.[doi:10.3969/j.issn.1001-3849.2021.11.005]
ChCl-Urea低共熔溶剂中电沉积锌的工艺研究
- Title:
- Study on the Technology of Zinc Electrodeposition in ChCl-Urea Deep Eutectic Solvent
- 文献标志码:
- A
- 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2ZnCl2∶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。
- Abstract:
- 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 2ZnCl2∶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.
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备注/Memo
收稿日期： 2020-12-09；修回日期： 2021-01-20
作者简介： 孙海静（1985-），女，博士，副教授，hjsun@sylu.edu.cn
*通信作者： 孙杰，jiersun2000@126.com
基金项目： 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