The Superconducting Tape of Nb3Al Compound

Annotation. Compound Nb3Al with critical temperature Tc ≈ 18.5 K has the upper critical magnetic field Hc2 of 30 T, which is significantly higher than that of the well-known Nb3Sn. Besides, aluminum is lighter and cheaper than tin and is widely abundant in nature. With such properties, Nb3Al is a good alternative to Nb3Sn. The next chapter proposed steps for the development of manufacturing technology of superconductor Nb3Al tapes from its approbation on a three-layer composite Nb/Al/Nb tape to obtain experienced semi-finished pieces of multilayer Nb3Al-tape with length of about 100 m. This is despite the fact that in order to achieve the above values, Tc and Hc2 needed exposure for 1‒2 seconds at a temperature of 1850°C