MONOFILAMENT FOR PRODUCING AN NB3SN-CONTAINING SUPERCONDUCTOR WIRE, ESPECIALLY FOR INTERNAL OXIDATION

摘要

The invention relates to a monofilament (100) for producing an Nb sub 3 /sub Sn-containing superconductor wire (33), the monofilament (100) comprising: a powder core (1) containing an Sn-containing powder, - A reaction tube (3) made of an Nb alloy containing Nb and at least one further alloy component X, the powder core (1) being arranged inside the reaction tube (3), with at least one source in the monofilament (100) (4) is included for at least one partner component Pk, wherein a respective source (4) comprises one or more source structures at a uniform radial position in the monofilament (100); wherein the alloy component X and the partner component Pkso are selected so that during a reaction annealing of the monofilament ( 100), in which Sn from the powder core (1) and Nb from the reaction tube (3) react to Nb sub 3 /sub Sn, can form precipitates XPk, characterized in that the powder core (1) is in a moderation -Pipe (2) is arranged, and that the moderation tube (2) is arranged within the reaction tube (3). The invention presents a monofilament for a powder-tube-based Nb sub 3 /sub Sn-containing superconductor wire, with which a further improved current carrying capacity can be achieved.