| 摘要 |
<p>The invention concerns a supraconductive conductor (10) comprising at least a supraconductive core (11) and an aluminium-based cryogenic stabiliser (12) characterised in that it the stabiliser (12) consists, entirely or partly, of a high-purity aluminium alloy, called Al-Fe-Ni, comprising: 200 ppm ≤ Fe + Ni ≤ 1500 ppm; 0.20 ≤ Fe/ (Fe + Ni) ≤ 0.65; optionally B < 100 ppm; the sum of unavoidable impurity contents other than Fe, Ni and B < 0.01 %; the remainder being aluminium. The stabiliser of the inventive supraconductive conductor has simultaneously a residual resistivity ratio (RRR) higher than 500 and high mechanical properties, in particular a yield strength at 0.2 % elongation higher than 75 MPa at room temperature.</p> |
