Title :
Investigation of texture formation and phase transition in press-, CIP- and roll-sintered Ag-sheathed Bi(2223) tapes
Author :
Pachla, W. ; Marciniak, H. ; Szulc, A. ; Wroblewski, M. ; Kovac, P. ; Husek, I. ; Melisek, T.
Author_Institution :
High Pressure Res. Center, Polish Acad. of Sci., Warsaw, Poland
fDate :
6/1/1997 12:00:00 AM
Abstract :
Observations were made on the Bi(2223) tapes undergoing uniaxial pressing (up to 5.7 GPa), CIPing (up to 2.5 GPa) and rolling combined with sintering. Tapes were fabricated utilizing drawing and flat rolling. They have shown strong textures for press- and roll-sintering modes of working and have indicated that CIPing improves effectively the core density, but if not accompanied by pre-annealing, it is not able itself to improve the core texturing. The FWHM of the rocking curves was measured to evaluate texturing degree and its dependence on the measurement geometry was emphasized.
Keywords :
bismuth compounds; calcium compounds; composite superconductors; rolling; silver; sintering; strontium compounds; superconducting tapes; texture; 0 to 5.7 GPa; Ag; BiSrCaCuO; CIPing; FWHM; core density; core texturing; drawing; flat rolling; measurement geometry; phase transition; pre-annealing; press-sintering modes; rocking curves; roll-sintered Ag-sheathed Bi(2223) tapes; texture formation; uniaxial pressing; Engineering drawings; Etching; Geometry; High temperature superconductors; Microstructure; Pressing; Scanning electron microscopy; Shape control; Superconducting filaments and wires; Superconducting films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
