Method of preparing oxide superconducting wire

Details Method of preparing oxide superconducting wire Method of preparing oxide superconducting wire

H - Electricity

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H01B 12/04 (2006.01) B21B 1/16 (2006.01) B21B 27/10 (2006.01) B21B 45/00 (2006.01) B23K 20/00 (2006.01) C04B 35/45 (2006.01) C22C 29/12 (2006.01) H01L 39/24 (2006.01) B21B 1/38 (2006.01) B21B 3/00 (2006.01) B21B 27/00 (2006.01)

Patent

CA 2063285

In a method of preparing an oxide superconducting wire comprising the steps of filling up raw material powder for an oxide superconductor in a metal sheath and rolling the same in this state, frictional force on surfaces of rolls employed for rolling is increased in the rolling step in order to improve denseness of the raw material powder, thereby improving the critical current density of the oxide superconducting wire. In order to increase the frictional force, films having large frictional force are formed on the roll surfaces, a coating material is applied to the roll surfaces during rolling, or the roll surfaces are roughened, for example.

Méthode de préparation d'un fil composé d'un oxyde supraconducteur, qui consiste à remplir une gaine métallique de poudre utilisée comme matière première d'un oxyde supraconducteur et à laminer le tout, tel quel. La force de frottement sur les surfaces des cylindres de laminage est augmentée, lors de cette étape, afin d'améliorer la densité de la poudre servant de matière première, ce qui permet d'améliorer la densité de courant critique du fil composé d'un oxyde supraconducteur. Pour augmenter la force de frottement, des couches ayant une importante force de frottement sont formées sur les surfaces des cylindres, un matériau de revêtement est appliqué sur les surfaces des cylindres pendant le laminage, ou les surfaces des cylindres sont rendues rugueuses.

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