METHOD TO MANUFACTURE DOUBLE PANCAKE-SHAPED PERSISTENT CURRENT MODE MAGNET

摘要

Disclosed is a method to manufacture a double pancake-shaped persistent current mode magnet using the direct bonding of a ReBCO superconducting layer. The double pancake-shaped persistent current mode magnet manufacturing method according to the present invention includes the following steps: winding and stacking second-generation ReBCO high temperature superconducting bodies, which include a substrate, a ReBCO (ReBa_2Cu_3O_7-x, wherein Re is a rare earth element, 0=x=0.6) high temperature superconducting layer, and a stabilizing layer; and bonding the stacked second-generation ReBCO high temperature superconducting bodies. Bonding the second-generation ReBCO high temperature superconducting bodies includes the following steps: (a) exposing a ReBCO superconducting layer by removing a part or whole of the stabilizing layer of a part (bonding part) where a first ReBCO high temperature superconducting layer and a second ReBCO high temperature superconducting layer are bonded; (b) performing a bonding in direct contact with the exposed ReBCO superconducting layer of each bonding unit; and (c) recovering oxygen of the ReBCO superconducting layer of the bonding part by performing a heat treatment under an oxygen atmosphere. Before step (a) or step (b), a hole forms to penetrate from the substrate of the bonding part to the ReBCO superconducting layer or to penetrate the ReBCO superconducting layer in the substrate of the bonding unit.;COPYRIGHT KIPO 2015