Batch-type fabrication process of YBCO coated conductor using oxide-precursor-based MOD method

산화물 전구체 기반의 MOD방법을 이용한 YBCO 고온초전도 선재의 batch-type 제조 공정

  • 정국채 (한국기계연구원 신기능재료연구본부) ;
  • 유재무 (한국기계연구원 신기능재료연구본부) ;
  • 고재웅 (한국기계연구원 신기능재료연구본부) ;
  • 김영국 (한국기계연구원 신기능재료연구본부)
  • Published : 2005.09.01

Abstract

[ $Y_1Ba_2Cu_3O_{7-8}$ ] (YBCO) coated conductor has been fabricated by batch-type process using oxide-precursor-based metal-organic deposition (MOD) method. The batch-type process can be scaled up more simply to Produce long-length YBCO conductor than the reel-to-reel process. Also, it has less handling problems and is adequate to the ambient gas environment. In this work, YBCO oride powder was used as a starting precursor for MOD method. After reel-to-reel dip coating process, me ter-long-buffered metal tape was wound around a cylinder and underwent calcination and annealing processes. Annealed YBCO films showed good c-axis alignment and dense surface morphology with no cracks, but exhibited very low critical current density of $10^5\;A/cm^2$.

Keywords