在低转变温度氯化胆碱-乳酸混合物中电沉积锡层的研究  

Electrodeposition of Tin Layer in a Low Transition Temperature Mixture of Choline Chloride and Lactic Acid

作　　者：赵丽晴 毛昂 孙星 刘在时 包全合[1] ZHAO Liqing;MAO Ang;SUN Xing;LIU Zaishi;BAO Quanhe(Schoocl of Material Science and Engineering,Anhui University of Technology,Ma’anshan 243000,Anhui China;Rongbai New Energy Technology Co.,Ltd.,Yuyao 315000,Zhejiang China)

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243000 [2]宁波容百新能源科技有限公司,浙江余姚315000

出　　处：《热处理》2020年第1期10-14,共5页Heat Treatment

基　　金：大学生创新创业训练计划项目(201710360016,201810360178,201810360177)。

摘　　要：将氯化胆碱、乳酸按一定比例混合制备了低转变温度混合物,随后在混合物中加入SnCl2获得电沉积液。将尺寸为4.5cm×3.0cm的铁片分别在50℃和60℃的电沉积液中沉积了锡层。借助于电导率测定仪、扫描电镜、X射线衍射仪和电化学工作站研究了电沉积温度对电沉积锡层的微观形貌、成分、相组成和耐蚀性的影响。结果表明:与50℃电沉积的锡层相比,60℃电沉积的锡层的电导率较大,晶粒较粗,孔隙较多,导致其腐蚀电势负移,腐蚀电流密度增大。Low transition temperature mixture was prepared by mixing choline chloride with lactic acid in an appropriate proportion.After this,SnCl2 was added into the low transition temperature mixture with the result that an electroplating bath was prepared.Iron pieces measuring 4.5 cm by 3.0 cm were electroposited with tin in the electroplating bath at 50 and 60℃,respectively.The electroposited tin layers were tested for microstructure,composition,phase constituent and corrosion resistance by means of conductivity measuring instrument,scanning electron microscope,X-ray diffractometer and electrochemical workstation.The results showed that relative to the tin layer electrodeposited at 50℃,the tin layer electrodeposited at 60℃exhibited greater conductivity,coarser grains.and more porosity,thus causing its corrosion potential to shift negatively and the corrosion current density to increase.

关 键 词：氯化胆碱 乳酸 低转变温度混合物 电沉积 锡 耐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理]