EFFECT OF INTERMEDIATE DEFORMATION ON THE TEXTURING OF Bi-2223/Ag TAPES

Abstract

The effect of intermediate deformation (ID) on texturing of Bi -2223 phase was studied by SEM and rocking curve. There exists a peak value for the degree of texturing as a function of ID reduction. The optimum reduction for intermediate rolling and intermediate pressing is 14.3% and 10.7%, respectively. The texturing of the Bi -2223 phase was further improved by the final heat treatment after ID. Moreover, the critical current density ( Jc ) of the tapes was directly proportional to the texturing of Bi -2223 phase.