| 摘要 |
Multifilament superconducting wire strand made from a starting billet comprising a superconducting core made from niobium or a niobium alloy, surrounded by at least one separating material, by successive stages of extrusion and of wire-drawing from the said starting billet and then of assembly, characterised in that the said wire strand comprises 5.10<5> to 5.10<6> filaments each constituted by the said superconducting core reduced to a diameter lying between fifty and one hundred and fifty nanometres which are separated form each other by a distance lying between thirty and one hundred nanometres, this distance being filled by the said separating material which comprises more than 8% of manganese or of iron. <IMAGE> |
