Lap Joint Characteristics of the YBCO Coated Conductors Under Axial Tension

Author

Wei Liu ; Xingyi Zhang ; Yong Liu ; Jun Zhou ; Youhe Zhou

Author_Institution

Key Lab. of Mech. on Disaster & Environ. in Western China, Lanzhou Univ., Lanzhou, China

Volume

24

Issue

6

fYear

2014

fDate

Dec. 2014

Firstpage

1

Lastpage

5

Abstract

In this paper, we present a solder method for the lap joint of the YBa₂Cu₃O_7-x coated conductor (YBCO CC) without removing the metallic stabilizer. Several solder joints with the same overlap of 80 mm were manufactured. In the case of self-field and at liquid nitrogen temperature, the resistances of solder joints are equal to about 10 nΩ. In addition, the resistance is not influenced by the axial tension force and external magnetic field. The critical current degradation caused by the axially applied strain and external magnetic field exhibits consistent behavior of the original YBCO CC. At room temperature, the mechanical property of the specimen with joint is determined by the original tape. Moreover, at 77 K, the tension characteristic of the sample with and without joint exceeds that at room temperature.

Keywords

barium compounds; critical currents; electrical resistivity; high-temperature superconductors; solders; superconducting tapes; yttrium compounds; YBCO; YBCO coated conductors; axial tension force; axially applied strain; critical current degradation; external magnetic field; lap joint characteristics; liquid nitrogen temperature; mechanical property; metallic stabilizer; solder joint resistances; temperature 293 K to 298 K; temperature 77 K; Conductors; Critical current density (superconductivity); High-temperature superconductors; Joints; Magnetic fields; Soldering; Yttrium barium copper oxide; $hbox{YBa}_{2}hbox{Cu}_{3}hbox{O}_{7-x}$ coated conductor (YBCO CC); Axial tension; soldered lap joint;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2014.2332444

Filename

6845352