Superconducting properties of tubular elements with diffusion layers of Nb3Sn
Abstract
An experimental study of the dependence of the superconducting properties (critical current density and losses) of thick diffusion layers of Nb3Sn on structure and diffusion parameters is presented. An attempt was made to clarify the mechanism and kinetics of Nb3Sn layer formation as well as the magnitude of ac losses. It is shown that a critical current of 450 A/mm can be obtained in a field of 6 T by increasing the Nb3Sn diffusion layer within the limits of optimal grain size. The greatest contribution to the integral critical current which can pass through the diffusion layer is made by the region of small equiaxial crystals.
- Publication:
-
Fizika Metallov i Metallovedenie
- Pub Date:
- October 1980
- Bibcode:
- 1980FizMM..50..730P
- Keywords:
-
- Current Density;
- Metal Crystals;
- Niobium Stannides;
- Superconductivity;
- Thermal Diffusion;
- Current Distribution;
- Electric Conductors;
- Film Thickness;
- Intermetallics;
- Pipes (Tubes);
- Solid-State Physics