| Bi系高温超导带材冷压工艺优化试验 |
| |
| 引用本文： | 马衍伟, 王先进, 王祖唐. Bi系高温超导带材冷压工艺优化试验[J]. 工程科学学报, 1998, 20(6): 531-535. DOI: 10.13374/j.issn1001-053x.1998.06.006 |
| |
| 作者姓名： | 马衍伟 王先进 王祖唐 |
| |
| 摘 要： | 采用套管法(PET)制备Bi系高温超导带材,进行了冷压工艺的优化研究。试验结果表明,Bi系带材所能承受的压力有一个限值,若超过这个限值后,密度虽可提高,但晶粒破碎严重Jc值反而降低。带材优化的冷压工艺参数是838℃/60h+冷压+838℃/60h冷压+838℃/60h.第1次压力为2GPa,第2次2.5GPa;冷压压下速率为1.5×10-4mm/s.同时研究还表明冷压的主要作用是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。
|
| 关 键 词： | Bi-超导带材 冷压 临界电流密度 |
| 收稿时间： | 1998-03-25 |
Researches on the Optimization of Cold Pressing of Ag-clad Bi-2223 Superconducting Tapes |
| |
| Ma Yanwei, Wang Xianjin, Wang Zutang. Researches on the Optimization of Cold Pressing of Ag-clad Bi-2223 Superconducting Tapes[J]. Chinese Journal of Engineering, 1998, 20(6): 531-535. DOI: 10.13374/j.issn1001-053x.1998.06.006 |
| |
| Authors: | Ma Yanwei Wang Xianjin Wang Zutang |
| |
| Abstract: | Optimum researches of cold pressing of Ag-clad Bi-2223 superconducting tapes fabricated by Powder-in-tube method were carried out. Cold pressing was necessary to produce tapes with good texture and high Jc values. The optimum technical parameters are sintering three times at 838℃ for 60h and pressing twice with pressure 2.0GPa and 2.5GPa for the first and second compaction respectively. Reduction rate of cold pressing is 1.5×10-4mm/s. Meanwhile, experimental results exhibited that high density and degree of grain alignment of the tapes are mainly attributed to cold perssing. |
| |
| Keywords: | Bi-based superconducting tapes cold pressing critical current density |
|
| 点击此处可从《工程科学学报》浏览原始摘要信息 |
|
点击此处可从《工程科学学报》下载全文 |
|
