Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Direct Preparation of fine Powders of Bi-Pb-Sr-Ca-Cu-O by Ultrasonic Spray Pyrolysis

초음파 분무열분해에 의한 Bi-Pb-Sr-Ca-Cu-O의 미분체 제조

  • 주명희 (한국화학연구소 무기재료연구부) ;
  • 박도순 (한국화학연구소 무기재료연구부) ;
  • 김윤수 (한국화학연구소 무기재료연구부)
  • Published : 1991.05.01
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Abstract

Fine powders of the 2212 superconducting phase of bismuth system have been prepared directly from solution using ultrasonic spray pyrolysis. The fine superconducting powders produced by pyrolysis were characterized for the size, shape, and crystalline phase by SEM and XRD. The pyrolysis temperature, flow rate of the carrier gas, residence time of the droplets greatly influenced the size, shape, and crystalline phase. The optimum temperature and flow rate of the carrier gas for the preparation of fine powders of the 2212 superconduting phase were found to be 830$^{\circ}C$and 3ι/min, respectively.

Keywords

References

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