Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Synthesis and Characterization of Bi2Sr2Ca2Cu3Ox Powders by Ultrasonic Spray Pyrolysis Method

Ultrasonic Spray Pyrolysis 법에 의한 Bi2Sr2Ca2Cu3Ox 분말합성 및 특성평가

  • Bae, Bung-Su (Division of Advanced Material Science and Engineering, Department of Engineering, Pukyong National University) ;
  • Jung, Sang-Jin (Division of Advanced Material Science and Engineering, Department of Engineering, Pukyong National University) ;
  • Lee, Bong (Department of Polymer Engineering, Pukyong National University) ;
  • Moon, Chang-Kwun (Division of Advanced Material Science and Engineering, Department of Engineering, Pukyong National University) ;
  • Choi, Hee-Lack (Division of Advanced Material Science and Engineering, Department of Engineering, Pukyong National University)
  • 배병수 (부경대학교 공과대학 신소재공학부) ;
  • 정상진 (부경대학교 공과대학 신소재공학부) ;
  • 이봉 (부경대학교 고분자공학과) ;
  • 문창권 (부경대학교 공과대학 신소재공학부) ;
  • 최희락 (부경대학교 공과대학 신소재공학부)
  • Received : 2010.10.20
  • Accepted : 2010.12.17
  • Published : 2010.12.31
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Abstract

Superconductor material $Bi_2Sr_2Ca_2Cu_3O_x$(Bi-2223) powders were synthesized by ultrasonic spray pyrolysis method. It is clear that Bi-2223 phase more than Bi-2212 phase was acquired at sufficient synthesized time. Best condition for Bi-2223 phase was synthesizing temperature at $860^{\circ}C$. We also investigated the effects for concentrations and viscosities of starting liquid precursor as well as temperature distribution of reacting furnace. The size of synthesized powder was decreased by decreasing the concentration of starting liquid precursor. Modified reacting furnace with four different temperature heating zones gave us successful results for desirable nano-powder including $Bi_2Sr_2Ca_2Cu_3O_x$ phase. Citric acid addition to starting liquid precursor showed increasing of the size for synthesized powder. Bi-2223 single phase was acquired from Bi2223 and Bi-2212 mixed phases through heat treatment in box furnace at 24 hours.

Keywords

References

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