Developments of Ag-Sheath Bi-2223 Wire

Abstract

After the over-pressure sintering method and the pre-tensioned lamination technique were introduced, critical current and mechanical properties of Ag-sheath Bi-2223 wire have been drastically improved, though further enhancement of their properties is necessary for promoting practical applications. This paper reviews the recent understanding of the critical current properties and improvement of the mechanical properties, and introduces achievements of Ag-sheath Bi-2223 wire which have been used for current lead, cable, magnet and motor applications.

Fig. 7 EBSD and IPF results of the mass production Bi-2223 wire and developed high J_c Bi-2223 wire.