发明名称 METHODS OF SPLICING 2G REBCO HIGH TEMPERATURE SUPERCONDUCTORS USING PARTIAL MICRO-MELTING DIFFUSION PRESSURIZED SPLICING BY DIRECT FACT-TO-FACE CONTACT OF HIGH TEMPERATURE SUPECONDCTING LAYERS AND RECOVERING SUPERCONDUCTIVITY BY OXYGENATION ANNEALING
摘要 Disclosed is a splicing method of two second-generation ReBCO high temperature superconductor coated conductors (2G ReBCO HTS CCs), in which, with stabilizing layers removed from the two strands of 2G ReBCO HTS CCs through chemical wet etching or plasma dry etching, surfaces of the two high temperature superconducting layers are brought into direct contact with each other and heated in a splicing furnace in a vacuum for micro-melting portions of the surfaces of the high temperature superconducting layers to permit inter-diffusion of ReBCO atoms such that the surfaces of the two superconducting layers can be spliced to each other and oxygenation annealing for recovery of superconductivity which was lost during splicing.
申请公布号 US2014296078(A1) 申请公布日期 2014.10.02
申请号 US201213882289 申请日期 2012.10.29
申请人 K. JOINS 发明人 Oh Young-Kun;Ann Hee-Sung;Lee Myung-Whon;Lee Hai-Gun
分类号 H01L39/24 主分类号 H01L39/24
代理机构 代理人
主权项 1. A splicing of second generation Rare-Earth Barium Cupper Oxide high temperature superconductor coated conductors (2G ReBCO HTS CCs) and superconductivity recovery method through oxygenation annealing of 2G ReBCO HTS CCs, comprising: (a) preparing, as splicing targets, two strands of 2G HTS CCs each including a ReBCO (ReBa2Cu3O7-x, where Re is a rare-earth materials, x ranges 0≦x≦0.6) high temperature superconducting layer; (b) forming holes in a splicing portion of each of the 2G ReBCO HTS CCs; (c) etching each of the 2G ReBCO HTS CCs to expose a surface of the ReBCO high temperature superconducting layer in the splicing portion of the 2G ReBCO HTS CCs; (d) arranging the 2G ReBCO HTS CCs such that the exposed surfaces of the ReBCO high temperature superconducting layers directly abut each other, or such that the exposed surface of each of the ReBCO high temperature superconducting layers directly abuts an exposed surface of a ReBCO high temperature superconducting layer of a third 2G ReBCO HTS CCs; (e) loading the 2G ReBCO HTS CCs into a splicing furnace, with the exposed surfaces of the ReBCO high temperature superconducting layers directly abutting each other, followed by maintaining the furnace in a vacuum; (f) increasing an inner temperature of the furnace for micro-melting of the exposed surfaces of the ReBCO high temperature superconducting layers, inter-diffusion of ReBCO atoms, and splicing the ReBCO layers of the 2G ReBCO HTS CCs; (g) annealing a 2G ReBCO HTS CCs under oxygen atmosphere to supply oxygen to the ReBCO high temperature superconducting layers in each of the 2G ReBCO HTS CCs; (h) coating the spliced zone of 2G ReBCO HTS CCs with silver (Ag) so as to prevent quenching by bypassing over-current at the spliced zone between the 2G ReBCO HTS CCs; and (i) reinforcing the spliced and silver (Ag)-coated zone of the 2G ReBCO HTS CCs with a solder or an epoxy.
地址 Seoul KR