High Critical Current Superconductors and Preparation Thereof.
DEPARTMENT OF THE NAVY WASHINGTON D C
Pagination or Media Count:
It is an object of the invention to provide a method of manufacturing superconductors with near or actual two phase alloys with a critical temperature above 14.5K. This is achieved by composite superconductors made from vanadium-gallium V-Ga and copper-gallium Cu-Ga or niobium-tin Nb-Sn and copper-tin Cu-Sn or vanadium-silicon V-Si and copper-silicon Cu-Si with an increased amount of metal solute and made by a mechanical deformation process. This includes a homogenization anneal to improve the uniformity of dispersion in the alloy, several series of anneals during the reduction in cross sectional size of the composite thereby avoiding degradation of the composite by stresses and strains imparted during the mechanical reduction, and a solid state reaction between the two alloys to form the superconducting interfacial layer in a vacuum or in an inert atmosphere.
- Laminates and Composite Materials
- Metallurgy and Metallography
- Solid State Physics