Modern superconductive materials for electrical machines and devices working on the principle of levitation

• Published in: Физика низких температур
• Date: 2006
• Main Author: Prikhna, T.A.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Subjects: Experimental Methods and Applications
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/120200
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Modern superconductive materials for electrical machines and devices working on the principle of levitation / T.A. Prikhna // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 661–676. — Бібліогр.: 23 назв. — англ.

The peculiarities of high-pressure synthesis of highly dense nanostructural MgB₂-based superconductive materials, of thermobaric treatment of MT–YBCO (melt-textured YBa₂Cu₃O₇₋δ- based superconductor), high-pressure sintering of YBa₂Cu₃O₇₋δ, oxygenation of MT–YBCO under high isostatic pressure of oxygen and processes of formation of superconductive junctions between MT-YBCO blocks are considered. The attained level of superconductive and mechanical properties of such materials and junctions make them promising for application in cryogenic devices working on the principle of levitation: electricmotors, generators, pumps for liquid-gas transfer, magnetic bearings, flywheels, fault current limiters, maglev transport, etc. High-pressure synthesized MgB₂ (with Ti additions) blocks were for the first time tried in the superconductive electricmotor at 20 K and demonstrated an efficiency similar to MT–YBCO (at the same working temperature).