TiO₂-Nb₂O? sol was prepared using sol-gel method. Crystalline properties of gel powder changed from rutile phase to anatase phase with increasing Nb₂O? additives at 800℃, while they retained rutile phase regardless of Nb₂O? additives a...
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https://www.riss.kr/link?id=A76541408
2006
Korean
560
구)KCI등재(통합)
학술저널
349-353(5쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
TiO₂-Nb₂O? sol was prepared using sol-gel method. Crystalline properties of gel powder changed from rutile phase to anatase phase with increasing Nb₂O? additives at 800℃, while they retained rutile phase regardless of Nb₂O? additives a...
TiO₂-Nb₂O? sol was prepared using sol-gel method. Crystalline properties of gel powder changed from rutile phase to anatase phase with increasing Nb₂O? additives at 800℃, while they retained rutile phase regardless of Nb₂O? additives at 900℃, 1,000℃. They retained amorphous phase from 50℃ to 400℃, retained anatase phase from 500℃ to 600℃ and had rutile phase over 700℃ at 1mole% Nb₂O? additive. After TiO₂-Nb₂O? sol retained low viscosity with normal chain structure for a long time, its viscosity increased fast with network structure. DTA properties of gel powder had endothermic reaction due to evaporation of propanol and water about 78℃, had exothermic reaction due to propanol combustion about 290℃ and had exothermic reaction due to changing of TiO₂ phase about 640℃.
목차 (Table of Contents)
(1-x)Mg₄Ta₂O?-x(TiO₂, CaTiO₃, SrTiO₃) 세라믹스의 마이크로파 유전 특성
인버터 구동 유도전동기 고정자 권선의 함침기법에 따른 절연성능 평가
초고압 차단기용 코일건 타입 조작기의 기술적 타당성 검토