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Influence of a AgCu alloy coating on the mechanical deformation and superconducting properties of Bi2Sr2CaCu2Ox tapes

Journal Article


Abstract


  • Bi2Sr2CaCu2Ox superconducting tapes sheathed in Ag-Cu alloy and in Ag for comparison, have been prepared using a powder-in-tube method. The mechanically stronger AgCu alloy improves the mechanical and superconducting properties of the tape. Compaction of the core by the stronger alloy sheath leads to a greater critical current density (Jc). Values of Jc of 5 × 103 A/cm2 and 8 × 103 A/cm2 were obtained at 77.6 K for 0.2 mm thick Ag and AgCu-sheathed tapes respectively. The critical temperature of the AgCu-sheathed tape appeared to be higher than that of the silver-sheathed one. The microstructure observed for both kinds of tape by means of scanning electron microscopy showed more aligned structure of Bi-2212 grains and a smaller amount of secondary phases in the Ag-sheathed tape.

Publication Date


  • 1997

Citation


  • Pan, A. V., Ionesku, M., & Dou, S. X. (1997). Influence of a AgCu alloy coating on the mechanical deformation and superconducting properties of Bi2Sr2CaCu2Ox tapes. Metal Physics and Advanced Technologies, 16(9), 1039-1047.

Scopus Eid


  • 2-s2.0-0031370027

Web Of Science Accession Number


Start Page


  • 1039

End Page


  • 1047

Volume


  • 16

Issue


  • 9

Abstract


  • Bi2Sr2CaCu2Ox superconducting tapes sheathed in Ag-Cu alloy and in Ag for comparison, have been prepared using a powder-in-tube method. The mechanically stronger AgCu alloy improves the mechanical and superconducting properties of the tape. Compaction of the core by the stronger alloy sheath leads to a greater critical current density (Jc). Values of Jc of 5 × 103 A/cm2 and 8 × 103 A/cm2 were obtained at 77.6 K for 0.2 mm thick Ag and AgCu-sheathed tapes respectively. The critical temperature of the AgCu-sheathed tape appeared to be higher than that of the silver-sheathed one. The microstructure observed for both kinds of tape by means of scanning electron microscopy showed more aligned structure of Bi-2212 grains and a smaller amount of secondary phases in the Ag-sheathed tape.

Publication Date


  • 1997

Citation


  • Pan, A. V., Ionesku, M., & Dou, S. X. (1997). Influence of a AgCu alloy coating on the mechanical deformation and superconducting properties of Bi2Sr2CaCu2Ox tapes. Metal Physics and Advanced Technologies, 16(9), 1039-1047.

Scopus Eid


  • 2-s2.0-0031370027

Web Of Science Accession Number


Start Page


  • 1039

End Page


  • 1047

Volume


  • 16

Issue


  • 9