Niobium-zirconium alloy refers to an alloy formed by adding metal zirconium to metal niobium. The most important niobium-zirconium alloy is Nb-1Zr alloy. Nb-1Zr alloy is the most widely used niobium alloy. It is a low-strength niobium alloy with good processing and welding properties. It is mainly used in aerospace, atomic reactors, new electric light source sodium lamps and other application fields.