Fluorine-stabilized superconductor materials
US5002927A · kind A · utility
1Cited by
1References
13Claims
0Family size
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Key dates
| Filing date | Apr 3, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Apr 3, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/775
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ceramic superconductor materials, e.g., of rare earth/alkaline earth metal/transition metal/oxygen type, contain an effective stabilizing amount of fluorine atoms distributed therein in a concentration gradient decreasing from the external face surface of the material to the core region thereof; advantageously the fluorine atoms are principally distributed in an external protective diffusion barrier layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.