Abstract
Based on the two-powder process, the relationship between the heat treatment conditions and the inhomogeneity in the core microstructure and the 2223 phase content was investigated upon sintering the Bi-2223 long tapes. Several methods were proposed to improve the critical current homogeneity of long tapes. Using the process, a 50 metres long tape with highly current uniformity was fabricated. The Ic values is 60A (Jc∼3.5×104A/cm2, 77K, Self-field) for this tape and the its values deviation is less than 8% along the tape length.
| Original language | English |
|---|---|
| Pages (from-to) | 424 |
| Number of pages | 1 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 30 |
| Issue number | SUPPL. |
| State | Published - 2001 |
| Externally published | Yes |
Keywords
- Heat treatment homogeneity
- Long-length Bi-2223 tapes
- Two-powder process