Method for producing superconducting wire, method for...

H - Electricity – 01 – B

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H01B 13/00 (2006.01) H01B 12/10 (2006.01)

Patent

CA 2578883

Disclosed is a method for producing a superconducting wire comprising a step wherein a superconductor precursor powder is prepared by processing a raw material powder for superconductors, a step wherein a first metal pipe is filled with the superconductor precursor powder, and a step for sealing the metal pipe. By performing the step of filling the first metal pipe and the step of sealing the first metal pipe in a reduced-pressure atmosphere, the superconductor powder is surely deaerated, thereby producing a superconducting wire which is excellent in superconducting characteristics, particularly in critical current. Also disclosed are a method for producing a superconducting multicore wire, and a superconducting device produced by using such wires.

L~invention concerne un procédé de production d~un câble supraconducteur comprenant une étape de préparation d~une poudre précurseur par traitement d~une poudre de matière première pour supraconducteurs, une étape de remplissage d~un premier conduit métallique avec la poudre précurseur et une étape de scellement du conduit. La réalisation de l~étape de remplissage du premier conduit métallique et de son étape de scellement dans une atmosphère sous vide permet de parfaitement désaérer la poudre supraconductrice et de produire ainsi un câble offrant d~excellentes caractéristiques de supraconduction, notamment en courant critique. L~invention concerne également un procédé de production d~un câble multiconducteur supraconducteur et un dispositif supraconducteur produit à l~aide de tels câbles.

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