Strand critical current density in Nb3Sn superconducting strands via a novel heat treatment
US10825978B2 · kind B2 · utility
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Key dates
| Filing date | Jan 24, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Sep 21, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49014
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A new heat treatment for Internal-Tin Nb3Sn strands is described. The heat treatment uses Nausite membranes to decrease the volume fraction of the η phase and therefore minimize its liquefaction—ultimately resulting in better connected Nb3Sn. The heat treatment requires only one stage aside from the final Nb3Sn reaction stage. This heat treatment enables an increase in critical current density (at 16 T) of 28%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.