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介绍了8种 NbTi 基合金在高场下的临界电流密度。在这8种合金中,5种含有0.5—25%的钽。样品的加工适合于高场低温下操作。全部合金都表明,它们在温度低于3K 和磁场高达12万高斯时拥有实用的电流密度。含有大量钽的合金在高场下的电流密度显然比二元合金高一些。例如,Nb—43%Ti—25%Tα合金的临界电流密度在12万高斯和2K 时比二元合金大75%。而且,几种三元合金的电流密度的实用范围至少可以扩大到13万高斯。
The critical current densities of eight kinds of NbTi-based alloys in high field are introduced. Of the eight alloys, five contain 0.5-25% tantalum. Sample processing is suitable for operation at high field and low temperature. All alloys show that they have a practical current density at temperatures below 3K and magnetic fields as high as 120,000 gauss. The current density of alloys containing a large amount of tantalum at high field is obviously higher than that of binary alloys. For example, the critical current density of Nb-43% Ti-25% Tα alloy is 75% greater than binary alloys at 120,000 Gauss and 2K. Moreover, the practical range of the current density of several ternary alloys can be expanded to at least 130,000 Gauss.