Ultrasonic Spray Pyrolysis 법에 의한 Bi2Sr2Ca2Cu3Ox 분말합성 및 특성평가
Synthesis and Characterization of Bi2Sr2Ca2Cu3Ox Powders by Ultrasonic Spray Pyrolysis Method
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초록
Superconductor material Bi2Sr2Ca2Cu3Ox(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 860oC. 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 Bi2Sr2Ca2Cu3Ox 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 24hours.
Abstract
Superconductor material Bi2Sr2Ca2Cu3Ox(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 860oC. 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 Bi2Sr2Ca2Cu3Ox 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 24hours.
참고문헌 (6)
- 배병찬, "배향된 질화규소 휘스커 종자를 함유한 질화규소 세라믹스의 미세구조에 관한 연구", 한국해양공학회지, 23(5), pp.32~38 (2009), 한국해양공학회
- 유재무, "고온 초전도 BSCCO2223선재의 연구개발 동향및 향후전망", 대한금속․재료학회 재료마당, 14(4), pp.3~8 (2001)
- 이상필, "Al2O3와 Y2O3 입자를 함유한 액상소결 SiC 재료의 특성", 한국해양공학회지, 22(4), pp.59~64 (2008), 한국해양공학회
- Maeda, H, "A New High-Tc Oxide Superconductor without a Rare Earth Element", Jpn. J. Appl. Phys, 27, pp.L209~L210 (1988)
- In-SooShim, "Synthesis and Characterization of Al2O3", ZrO2, Al2O3, ZrO2, pp.TiO2 Ceramic Composite Particles Prepared by Ultrasonic Spray Pyrolysis, Bulletin of the Korean Chemical Society[DOI]
- Tarascon, J.M, "Origin of the 110-K Superconducting Transition in the Bi-Sr-Ca-Cu-O System", Phys. Rev., B38, pp.2504~2508 (1988)