The effect of pre-sintering and deformation rate on critical current density behaviour of Bi-2223 bulk samples made by sinter forging uri icon

abstract

  • A technique combining cold-isostatic-pressing (CIP) and sinter forging was applied to the fabrication of Bi-2223 bulks, and pre-sintering was conducted after (route 1) and before CIP (route 2). Both of them involve sinter forging twice and no post-annealing. The effect of pre-sintering and deformation rate on the critical current density Jc is investigated. Such obtained Bi-2223 bulks had a cross-sectional area of 1 cm2 and therefore the total critical current is close to meeting some technical applications. The Jc results from route 1 are much higher than from route 2 although both reached highest Jc at the deformation rate 80%. The main reason is that route 1 produces much larger, plate-like, better-contacted grains whereas by route 2 much smaller, round-shaped and poorly contacted grains were obtained.

published proceedings

  • SUPERCONDUCTOR SCIENCE & TECHNOLOGY

author list (cited authors)

  • Fu, X. K., McIntyre, P. M., Guo, Y. C., Liu, H. K., & Dou, S. X.

citation count

  • 0

complete list of authors

  • Fu, XK||McIntyre, PM||Guo, YC||Liu, HK||Dou, SX

publication date

  • July 2003