Development of a melt processing route for the fabrication of Tl-1223 coils
| Autor: | S.K. Wivell, S. Fox, D.M.C. Hyland, Crm Grovenor, J.C. Moore, M.J. Naylor |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Materials science
High-temperature superconductivity Fabrication chemistry.chemical_element Condensed Matter Physics Grain size Electronic Optical and Magnetic Materials Magnetic field law.invention Bismuth Grain growth chemistry law Phase composition Critical current Electrical and Electronic Engineering Composite material |
| Zdroj: | IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 1996 Applied Superconductivity Conference. 7(2) |
| ISSN: | 1051-8223 |
| Popis: | Tl-1223 tapes with engineering critical current densities, (E-Jc) values, of 2500Acm-2 can be routinely fabricated but the magnetic field properties are poor due to weak link effects. We have developed a partial melt processing route which results in increased grain growth with greater potential for achieving grain alignment. We have investigated the effect of Tl-1223 phase composition on the melt process and found that Bi substitutions lead to an increased grain size in tapes made using unreacted powder but a decrease in grain growth in tapes made with reacted powder. © 1997 IEEE. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|