Nb_3Al超导材料的制备与应用

Preparation and Application of Nb_3Al Superconducting Material

阐述了Nb3Al超导材料的主要制备技术及其在核能、核磁共振、高能加速器各领域中的应用。Al5型金属间超导化合物Nb3Al具有很高的上临界磁场(Bc2)和高场临界电流密度(Jc)。在强磁场下,Nb3Al具有比已实用化的Nb3Sn线材更好的抗应力特性和类似于Nb3Sn的辐照敏感性。Nb3Al作为大型核聚变反应堆用磁体材料有着很好的应用前景。随着Nb3Al超导材料的不断发展,它将越来越多地用于尖端技术中,可解决未来能源、交通、医疗和国防事业中的重要问题。

The main preparation technology for Nb3Al superconducting material and the applications of the material in nuclear energy,nuclear magnetic resonance and high energy accelerators are described.The Nb3Al of Al5 type has a very high upper critical magnetic field（Bc2） and a high critical current density（Jc）.Under the condition of a strong magnetic field,Nb3Al has a better resistance against stress than Nb3Sn and a similar radiation sensibility like Nb3Sn.It is found out that Nb3Al is a promising material for nuclear fusion.It is believed that with the development of the material,it will be more and more used in high technologies and can help solve many problems existing in energy,transportation,medicine and national defense.