한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제26권2호
  • /
  • Pages.221-227
  • /
  • 1989
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  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Citrate, Nitrate Process에 의한 YBa2Cu3O7-x초전도 분말합성

Preparation of High Tc YBa2Cu3O7-x Powders by Citrate and Nitrate Processes

  • 박수련 (한국과학기술원 정밀요업재료연구실) ;
  • 김윤호 (한국과학기술원 정밀요업재료연구실)
  • 발행 : 1989.02.01
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초록

To investigate the development and densification YBa2Cu3O7-x(1-2-3) superconducting phase, the 1-2-3 phase powders have been prepared by citrate and nitrate processes with changing calcination temperature. Nearly pure 1-2-3 phase peaks have been obtained by calcining the precursor in air at 90$0^{\circ}C$ for 2.5h in citrate process but at 95$0^{\circ}C$ for 2.5h in nitrate process. The sintering density of citrate derived sample calcined at 80$0^{\circ}C$ has been about 4% higher than that calcined at 90$0^{\circ}C$, although the compacting density has been lower at 80$0^{\circ}C$ calcination. This can be explained that the 1-2-3 phase particles formed at 80$0^{\circ}C$ have reactive sub-micron size which has good sinterbililty.

키워드

참고문헌

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