(Bi-2223)/Ag超导带材的冷压试验及其对微观组织的影响

详细信息

Cold pressing and its effect on microstructure of(Bi-2223)/Ag superconducting tapes

摘要: 进行了(Bi-2223)/Ag超导带材冷压工艺的优化研究。结果表明,冷压工艺可以有效提高带材的致密度和晶粒取向度,最终改善了带材的超导性能。带材优化的冷压工艺参数是838℃/60h+冷压+838℃/60h+冷压+838℃/60h,第一次压力为2GPa,第二次2.5GPa;冷压压下速率为1.5×10^-4mm/s。
- 高温超导带材 /
- 冷压 /
- 显微组织
Abstract: Cold pressing of Ag clad Bi 2223 superconducting tapes was systematically studied.The results showed that cold pressing was effective to fabricate tapes with good texture and high J C values.The optimum technical parameters are sintering thress times at 838℃ for 60h and pressing twice with pressure 2 0 GPa and 2 5 GPa for the first and second compaction respectively.Reduction rate of cold pressing was 1 5×10^-4 mm/s.
- Bi based superconducting tapes /
- cold pressing