Progress in research and development for high temperature and low temperature superconductors
| Autor: | N.A. Chernoplekov |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Superconductivity
Materials science High-temperature superconductivity Condensed matter physics Annealing (metallurgy) Niobium chemistry.chemical_element Titanium alloy engineering.material Electronic Optical and Magnetic Materials law.invention chemistry law engineering Electrical and Electronic Engineering Bronze Tin Type-II superconductor |
| Zdroj: | IEEE Transactions on Magnetics. 28:121-128 |
| ISSN: | 0018-9464 |
| Popis: | It is noted that the most significant result in the development of Nb-Ti conductors in the last few years is the attainment of the critical current density J/sub c/(5 T, 4.2 K)=(3-4)*10/sup 9/ A/m/sup 2/ in industrial lots of wires. This value is close to the upper limit for traditional thermomechanical treatments with low-temperature annealing. New results on Nb/sub 3/Sn and other A-15 compounds have been obtained using methods that overcome some weak points of the bronze process. However, the bronze technology will remain the most suitable for large-scale production. Active work on the first stage of HTSC (high-temperature superconductor) development has produced some promising results. Critical current density values at 4.2 K and 77.3 K have been obtained in bulk samples such that practical applications of HTSC in high current technologies can be seriously considered. > |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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