助焊剂和热镀锡温度对嵌入式NbTi/Cu超导线材表面及性能的影响  

Effect of Flux and Hot Tinning Temperature on Surface Quality and Properties of WIC NbTi/Cu Superconducting Wire

作　　者：郭强[1] 周安林[1] 张凯林 柳祥[1] 李建峰 刘向宏[1] 冯勇[1] 张平祥[1,2] Guo Qiang;Zhou Anlin;Zhang Kailin;Liu Xiang;Li Jianfeng;Liu Xianghong;Feng Yong;Zhang Pingxiang(Western Superconducting Technologies Co.,Ltd.,National Engineering Laboratory for Superconducting Materials,Xi’an 710018,China;Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China)

机构地区：[1]西部超导材料科技股份有限公司超导材料制备国家工程实验室,陕西西安710018 [2]西北有色金属研究院,陕西西安710016

出　　处：《钛工业进展》2019年第5期7-12,共6页Titanium Industry Progress

基　　金：陕西省国际科技合作计划资助项目(2017KW-022)

摘　　要：研究了超声波去油温度和乳化剂浓度对超声波清洗后U型铜槽线表面质量的影响。研究表明,乳化剂浓度为5%(体积分数)、温度为50℃的去油溶液可有效去除U型铜槽线表面的油污和灰尘;进一步研究了助焊剂对助焊后U型铜槽线表面状态的影响。研究表明,"300 g/L氯化亚锡+15%硝酸+3%异丙醇"助焊剂配方效果最好。在优化得到超声波去油和助焊最佳工艺参数的基础上,采用不同热镀锡温度(360~500℃)进行镶嵌实验。结果表明,热镀锡温度范围为400~440℃时,线材表面质量较好,无锡瘤、黑点、毛刺、露铜等表面缺陷,同时可以满足线材结合力和剩余电阻比的性能要求。The effects of ultrasonic deoiling temperature and concentrations of emulsifier on the surface quality of U shaped copper channel treated by ultrasonic cleaning were studied. Results show that emulsifier with the temperature of 50 ℃ and the volume fraction of 5% can effectively remove the oil and dirt on the surface of U shaped copper channel;Furthermore,the effects of flux on the U shaped copper channel surface state were also studied. Results show that the flux of"300 g/L stannous chloride + 15% nitric acid + 3% isopropyl alcohol"has the best welding effect. Based on the degreasing experiment and fluxing experiment,soldering experiments under different hot tinning temperature( 360 ~500 ℃) were conducted. Results show that when the hot tinning temperature is ranging from 400 ℃ to 440 ℃,wire surface quality is good,without any tin-lump,black spots,burrs and other surface defects. At the same time,wire bonding force between core wire and Cu channel and residual resistance ratio can meet the requirements.

关 键 词：U型铜槽线 表面形貌 助焊剂 热镀锡温度 

分 类 号：TG146.23[一般工业技术—材料科学与工程]