The route that combines with the mechanically alloying (MA) and powder-in-tube (PIT) method is thought as a potential way to make cost-friendly Nb₃Al superconducting wire, since the MA could produce the high-quality Nb(Al)_ss supersaturated solid solution and thus obtain high-J_c Nb₃Al superconductor. In order to know the effect of hot-pressure (HP) sintering on superconducting properties and flux pinning of Nb₃Al, a series of Nb₃Al superconducting bulks annealed at 950 °C for 3 h with different sintering pressure and ball milling time have been prepared in this work. The results suggest that for the mechanically alloyed Nb₃Al superconductor, its critical current density (J_c) and superconducting transition temperature (T_c) can be significantly improved by HP sintering. Comparing with the atmosphere pressure (AP) sintering, the T_{c, onset} and J_c (8 K, 7 T) of HP Nb₃Al sample with a milling time of 2 h increase from 15.1 K and 0.56 × 10⁴ A/cm² to 15.7 K and 6.03 × 10⁴ A/cm², respectively. Improvement of grain connectivity and flux pinning properties are thought to be mainly responsible to the enhancement of current-carrying ability of HP Nb₃Al superconductor.

结合机械合金化（MA）和管中粉末（PIT）方法的方法被认为是制造成本低廉的Nb ₃ Al超导线材的潜在途径，因为MA可以生产高质量的Nb（Al ）_ss过饱和固溶体，从而获得高J _c Nb ₃ Al超导体。为了了解热压烧结对Nb ₃ Al的超导性能和磁通钉扎的影响，在不同的烧结压力和球磨时间下，在950°C退火3 h的一系列Nb ₃ Al超导块体具有准备这项工作。结果表明，对于机械合金化的Nb ₃通过HP烧结可以显着改善Al超导体，其临界电流密度（J _c）和超导转变温度（T _c）。与大气压（AP）烧结相比，研磨时间为2 h的HP Nb ₃ Al样品的T _c，开始和J _c（8 K，7 T）从15.1 K和0.56×10 ⁴  A / cm增加^分别为2至15.7 K和6.03×10 ⁴  A / cm ²。人们认为，改善晶粒连通性和磁通钉扎性能的主要原因是增强HP Nb ₃的载流能力铝超导体。