Synethisis of fine BSCCO precursor powder by spray pyrolysis

분무 열분해에 의한 미세 BSCCO 전구체 분말의 합성

  • 김성환 (한국 기계연구원 세라믹재료그룹) ;
  • 유재무 (한국기계연구원 세라믹재료그) ;
  • 고재웅 (한국기계연구원 세라믹재료그) ;
  • 김영국 (한국기계연구원 세라믹재료그) ;
  • 박성창 (한국기계연구원 세라믹재료그룹)
  • Published : 2003.10.01

Abstract

Many researches on synthesis process for BSCCO precursor powders have been developed for high J$_{c}$ BSCCO-2223/Ag tape. Spray pyrolysis method for fabrication of precursor powder has many advantages, such as high purity, fine particle size of BSCCO precursor powder. Fine, spherical powders were prepared by ultrasonic spray pyrolysis from the aqueous solution of metal nitrates. BSCCO precursor powders were synthesized with 0.1 M concentration and heat treatment conditions. Average particle size for spray pyrolysis powders was 1.5 ~ 3 ${\mu}{\textrm}{m}$. BSCCO -2223/Ag tape was prepared by PIT method and followed by various sintering conditions. The critical current density of BSCCO-2223/Ag tape sintered in low oxygen partial pressure was ~ 23 kAcm$^{-2}$.

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