Effect of short processing time on Bi-2223 phase formation kinetics and critical current in Bi-2223/Ag tapes

Maximum values (f2223max and I(sub Cmax)) versus sintering time were exhibited by Bi-2223 volume fraction and the critical current in Bi-2223/Ag tapes. By further heating the Bi-2223 phase decomposed and the lc decreased. An optimal processing to substantially reduce the processing time in Ag-sheathed Bi-2223 tapes was introduced based on the investigation of the effect of processing on Bi-2223 phase formation kinetics. The results showed that the Bi-2223 phase formation rate decreased after 10-15h sintering.