Degree Name

Doctor of Philosophy


Department of Materials Engineering


This thesis concentrated on the processing of silver sheathed (Bi,Pb)2Sr2Ca2Cu30io (Bi- 2223) tapes which were made by powder-in-tube technique. The mature powder consisted of (Bi, Pb)2Sr2.xCai+xCu208 (0 < x < 1), SrCaCuO and Ca2Pb04 was made in our laboratory using spray dry machine. The best tapes with Jco of 4.5 X AJCTC? (conductor Jco of 1 x lO"^ A/cm^) were achieved in 100 hours sintering time at 77 K in self-field. Reproducibility of the tapes was improved by control of the phase assemblage of the precursor powder.



Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.