Experimental studies of diffusion welding of YBCO to copper using solder layers

26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016

材料科学;物理学

Xie, Y.^1,2 ; Ouyang, Z.^1 ; Shi, L.^1 ; Kuang, Z.^1 ; Meng, M.^1

High Magnet Field Laboratory, Chinese Academy of Science, Hefei, China^1

University of Science and Technology of China, Hefei, China^2

关键词: Controlled temperature;    Diffusion welding;    Material performance;    Vacuum environment;    Welding technology;    Welding temperatures;    YBCO;    YBCO coated conductors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012155/pdf
DOI  :  10.1088/1757-899X/171/1/012155

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The welding technology is of great importance in YBCO application. To make better joints, the diffusion welding of YBCO tape to copper has been carried out in a vacuum environment. In consideration of high welding temperature (above 200°C) could do damage to the material performance, a new kind of diffusion welding method with temperature below 200 °C has been developed recently. A new welding appliance which can offer pressure over 35Kg/mm2and controlled temperature has been designed and built; several YBCO coated conductors joints soldered with different melting points of tins has been tested. The results showed that the diffusion can perfectly connect YBCO to copper as well as stainless steel and resistance of the joint was low, and the YBCO tape could bear 217°C for at least 15mins.