腐蚀和热处理对YGdBCO带材结构和性能的影响  

Effect of chemical corrosion and heat treatment on the structure and properties of YGdBCO superconducting tapes

作　　者：付相铭 王文涛 刘连[2,3] 田正健 关玉明[4] 王铭 赵勇 Fu Xiangming;Wang Wentao;liu Lian;Tian Zhengjian;Guan Yuming;Wang Ming;Zhao Yong(Schol of Physical Science and Technology,Southwes Jiaotong University,Chengdu 610031,China;Superconductivity and New Energy Research and Development Center,Southwest Jiaotong University,Chengdu 600031 China;Maglev Tehnology and Magle Train Key Laboratory of Ministry of Education Southwest Jiaotong Univerity Chengdu 610031,China;Schol of Materals Seiene and Enginering,Southwes Jiaotong University,Chengdu 61031,China;Colege of Physies and Energy,Fujian Normal Universiy,Fuzhou 350117,China)

机构地区：[1]西南交通大学物理科学与技术学院,成都610031 [2]西南交通大学,超导与新能源研究开发中心,成都610031 [3]西南交通大学,磁浮技术与磁浮列车教育部重点实验室,成都610031 [4]西南交通大学材料科学与工程学院,成都610031 [5]福建师范大学物理与能源学院,福州350117

出　　处：《低温与超导》2022年第9期34-39,共6页Cryogenics and Superconductivity

基　　金：装备预研领域基金(61409230502);四川省科技计划项目(2021YJ0060)资助。

摘　　要：主要探索化学溶液法沉积超导焊料的生长过程,研究涂层溶液对YGdBCO带材超导层的腐蚀性以及在三个低温热处理阶段带材c轴织构和临界电流的变化,优化出了可制得与母材性能相近的涂层溶液合成技术和低温热处理工艺。在此基础上,在790℃高温成相过程中生长出具有c轴织构的YBCO薄膜,有助于解决母带超导层表面粗糙度较大导致界面原子扩散不均匀而产生的接头连接性较弱的问题。In this work, the growth process of superconducting solder deposited on superconducting layer of YGdBCO superconducting strip was explored by chemical solution deposition approach. The corrosion of coating solution to superconducting layer was investigated and the change of c-axis texture as well as critical current of YGdBCO tapes were analyzed in three stages of low temperature heat treatment. The optimal synthesis route of coating solution and low temperature heat treatment technology were achieved, which could prepare coated samples with comparable properties to original tape. On this basis, YBCO films with c-axis texture were grown in the process of high temperature phase formation at 790 ℃, which is helpful to solve the weak connection problem caused by uneven atom diffusion at joining interface, due to large surface roughness of original superconducting layer.

关 键 词：化学溶液沉积 超导焊料 热处理 临界电流 

分 类 号：TB34[一般工业技术—材料科学与工程]