Multifilament superconductor and method for its manufacture

摘要

The method involves providing superconductor filaments (7) including a powder metallurgical core. The filaments (7) and a reinforcement filament (6) are arranged to a bundle. The bundle is enclosed with an outer casing (3), which is made of non superconducting metal e.g. copper. The bundle is deformed by reducing cross section of the bundle to produce multifilaments. The deformed multifilaments are annealed with sufficient temperature and duration such that superconducting phases are formed in the core. The core has powder, which is made of niobium tantalum, tin and niobium tin. An independent claim is also included for a multifilament superconductor with a core area.