한국해양대학교

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수열합성법에 의한 미립 BaTiO₃ 분말의 합성

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dc.contributor.author 최경식 -
dc.date.accessioned 2017-02-22T06:25:38Z -
dc.date.available 2017-02-22T06:25:38Z -
dc.date.issued 2002 -
dc.date.submitted 56797-10-27 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002173916 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/9518 -
dc.description.abstract BaTiO₃ powders of nanometer-sized were synthesized at the temperature range of 110℃~180℃ in various pH range, and the hydrothermal process, one of the wet-chemical methods, that can make the morphology of powers more homogeneous and finer than solid-state reactions. BaCl₂ and TiCl₄ were used as starting materials, and NH₄OH was a precipitating agent. The synthesized powders were analysed by the XRD, TG-DTA, SEM, TEM and BET. And then, the dielectric and electronic properties of BaTiO₃ ceramics sintered at the temperature range of 1150~1350℃ were evaluated. Homogeneous and fine BaTiO₃ powders were obtained at the reaction temperature over 110℃ and the powders synthesized at 130℃ shows that the properties of powders were almost the same regardless of the reaction time. TEM investigation showed that the size of the BaTiO₃ powder synthesized at 130℃ for 2h was 25~35nm and the result of BET revealed that the surface area of powders was about 77.43㎡/g. The dielectric constant of the ceramic sintered at 1270℃ for 2h was as high as 3000. -
dc.description.tableofcontents 목차 1. 서론 = 1 2. 이론적 배경 = 3 2.1 BaTiO₃의 유전적 특징 = 3 2.2 MLCC = 8 2.3 BaTiO3의 합성방법 = 10 2.4 수열합성법(Hydrothermal Method) = 13 3. 실험방법 = 15 4. 실험결과 및 고찰 = 19 5. 결론 = 37 6. 참고 문헌 = 38 -
dc.publisher 한국해양대학교 -
dc.title 수열합성법에 의한 미립 BaTiO₃ 분말의 합성 -
dc.title.alternative Preparation of Fine BaTiO₃ Powder by the Hydrothermal Process -
dc.type Thesis -
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