摘要
评述了国外BSCCO高温超导（HTS）带材的最新进展。目前，工业轧制的Bi（Ph）－2223多芯带材短样的Jc（77K，0T）高达58000A·cm－2,千米以上长带的Jc（77K，自场）在1×104A·cm-2以上。用BSCCOHTS带村绕制的大线圈在20K产生了高达7T的磁场。在提高带材性能的同时，人们还研究成功许多制取BSCCO带材的改进工艺，其中，带材连续制取工艺可使BSCCO带的成本降低到一般产品的水平。
Recent worldwide progress in BSCCO tape fabrication and properties is reviewed. A short multifilamentary composite tape based on Bi (Pb)-2223 HTS and a scalable rolling process has reached a record Jc (77K) of up to 58 000 A. cm-2. Consistently high Jcs (77 K, self-fields) greater than1×104 A. cm-2 have been achieved along the entire lengths of over 1 000 m long for the tapes produced by some companies. Advances in the R&D of BSCCO tapes by the powder-in-tube technique continue to bring these materials closer to commercial applications. Pancake-shaped coils and prototype magnets fabricated from the long tapes, have been tested and characterized. Researches have built a large react and wind coil from Bi (Ph)-2223 tapes which generated a field of 7 T at 20 K. Much improved and simpler methods of producing Bi (Ph)-2223 tapes have been developed in recent years. Especially, some innovative continuous manufacturing processes have been developed and the amount of silver has been reduced. Therefore, the cost of BSCCO tape has been reduced to a level where it can be sold as a commodity product.Correspondent: Li Chengren, Senior Engineer, Northwest institute for Nonferrous Metal Research, Xi'an 710016, P. R. China, Tel:086-29- 6231117
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
1998年第5期253-258,共6页
Rare Metal Materials and Engineering
