Basic processing technology of Nb-Ti superconducting materials

Pure titanium and pure niobium are melted into alloy ingot by consumable arc furnace or plasma furnace. After hot extrusion, billet is formed into bar by hot rolling and cold drawing. Then the Nb-Ti alloy rod was inserted into the oxygen-free copper tube as the matrix material to form a single core rod. And after multiple composite assembly, processing into multi-core Nb-Ti superconducting wire and strip.

The material needs to undergo several large cold processing (processing rate above 90%) and low temperature (below 400℃) aging heat treatment, so that the superconductor can obtain enough effective pinning center, improve the superconducting material superconducting electrical properties.

Since the zero resistance effect of the superconductor brings the characteristics of no joule heat loss and the ability of the Nb-Ti superconductor to carry very high transport current in the strong magnetic field, the Nb-Ti superconducting material is particularly suitable for the application in the electrical field of high current and strong magnetic field.

Examples include high field magnets, generators, electric motors, MHD power generation, controlled thermonuclear reactions, energy storage devices, high speed maglev trains, ship electromagnetic propulsion and power transmission cables.