Method for using divider rods for separating superconducting regions in fine filament internal tin wire
US7216418B2 · kind B2 · utility
1Cited by
6References
13Claims
0Family size
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Key dates
| Filing date | Oct 22, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Mar 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49117
Abstract
A method for decreasing the effective magnetic filament sizes for high current internal tin Nb3Sn superconductors. During processing composite rods preferably comprised of copper clad Ta rods of approximately the same dimensions as the hexes in the designed filament billet stack are used as dividers in the subelement. Along with the Ta rods, Ta strips are strategically situated against the Nb or Nb alloy barrier tube which surrounds the subelement. The use of Ta as a spacer instead of copper prevents any reasonable likelihood of bridging of the superconducting phases formed after final reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.