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J. Korean Ceram. Soc. > Volume 28(1); 1991 > Article
Journal of the Korean Ceramic Society 1991;28(1): 37.
Polymeric Precursor법으로 제조한 $YBa_2Cu_3O_{7-x}$초전도세라믹스의 특성에 대한 하소 및 소결조건의 영향
석상일, 오재희1
한국화학연구소 무기2연구실
1인하대학교 무기재료공학과
The Influence of Calcining and Sintering Conditions on the Properties of $YBa_2Cu_3O_{7-x}$ Superconducting Ceramics Prepared by the Polymeric Precursor Process
The critical current density, electrical conductivity, critical magnetic field, Meissner effect, apparent density, and microstructure of YBa2Cu3O7-x ceramic superconductor prepared by polymeric precursor, while varing calcining and sintering conditions, were investigated. The best superconducting properties could be obtained from the body sintered at 93$0^{circ}C$ for 10h after calcining at 90$0^{circ}C$ for 10h, which gave 383A/$textrm{cm}^2$ of critical current density(Jc), 96K of onset temperature(Tonset), 94. 8K of zero temperature (Tzero) 225 Oe of critical magnetic field (Hc1), 72.8% of superconducting volume fraction measured by Meissner effect and 6.28g/㎤ of apparent density.
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