Fabrication of high current carrying Bi-2212/Ag superconducting tapes by the pre-annealing and cold rolling process

✍ Scribed by H Miaa; H Kitaguchi; H Kumakura; K Togana

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 280 KB
• Volume: 38
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(97)00175-6

✦ Synopsis

The pre-annealing and rolling process is employed to improve the microstructure and J c for Bi-2212/Ag tapes fabricated by using the dip-coating method and meltsolidification process. It is found that J c has been enhanced significantly in tapes processed by the combination of pre-annealing at 800-880°C and cold rolling at the deformation rate of 20-30%. The increase of J c is assigned to the enhancement of c-axis grain alignment and the uniformity of the Bi-2212 layer that brings about the improvement of grain coupling. This method is promising for fabricating long BSCCO tapes with homogeneous and high transport J c .