Title :
Current carrying properties of high-T/sub c/ Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ tapes in a large electromagnetic stress state
Author :
Watanabe, K. ; Awaji, S. ; Okada, M.
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
fDate :
6/1/1997 12:00:00 AM
Abstract :
Transport properties under a large electromagnetic stress state of up to 190 MPa were investigated at 4.2 K for high-T/sub c/ Bi-based superconductors. A double pancake test coil employing Ag-sheathed multifilamentary Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ (Bi2212) tapes was fabricated by a react and wind method reinforced with a Cu-50Ag tape. It is shown that the use of a parallel co-wound Cu-50Ag tape leads to improvement of mechanical properties. A quite stable behavior for the Ag-sheathed multifilamentary Bi2212 coil is observed with appearance of large normal zone voltages.
Keywords :
bismuth compounds; calcium compounds; high-temperature superconductors; multifilamentary superconductors; silver; strontium compounds; superconducting coils; superconducting magnets; superconducting tapes; 190 MPa; 4.2 K; Ag; Ag-sheathed multifilamentary Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/ (Bi2212) tapes; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/; HTSC; current carrying properties; double pancake test coil; large electromagnetic stress state; large normal zone voltages; mechanical properties; parallel co-wound Cu-50Ag tape; react and wind method; stable behavior; transport properties; Bismuth; Boring; Magnetic materials; Strontium; Superconducting coils; Superconducting magnets; Superconducting materials; Temperature; Testing; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
