Improvement of strain endurance of critical current of silver-sheathed superconducting tapes by reducing volume fraction of Bi(Pb)SrCaCuO oxide core

✍ Scribed by S. Ochiai; K. Hayashi; K. Osamura

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 456 KB
• Volume: 33
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(93)90227-f

✦ Synopsis

High T c Bi(Pb)-Sr-Ca-Cu-O core/silver sheath superconducting composite tapes with various volume fractions of oxide core (0.05-0.5) were prepared by the powder-in-tube method. The influence of the volume fraction of the oxide core on the strain endurance of the critical current density at 0 T at 77 K was investigated. It was demonstrated that the strain endurance of the critical current can be raised by reducing the volume fraction of oxide, due to enhanced compressive residual strain in the oxide which is introduced during cooling from the heat treatment temperature to 77 K.