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J. Korean Ceram. Soc. > Volume 46(2); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(2): 137.
doi: https://doi.org/10.4191/kcers.2009.46.2.137
슬러리 분무열분해에 의한 초미립 티탄산 바륨 분말 제조
이종호, 허강헌, 이정수
삼성전기 주식회사 LCR 사업부
Preparation of Ultrafine Barium Titanate Powder by Slurry Spray Pyrolysis
Jong-Ho Lee, Kang-Heon Hur, Jung-Soo Lee
LCR Division, Samsung Electro-Mechanics Co., Ltd.
A remarkable improvement of the productivity in barium titanate by slurry spray pyrolysis process was realized by supplying solid source slurry into the rector. The produced barium titanate powders showed uniform powder properties, and reproducibility with higher tetragonality in the range of 80$sim$200 nm, case by case. The secondary calcination experiments of the as-prepared powders by spray pyrolysis revealed that the powders as-prepared over 700$^{circ}C$ showed perfectly different behavior with the lower temperature's ones and the solid state reaction’s case. The result was discussed in terms of the reaction mechanism based on the activation energy analysis.
Key words: Spray pyrolysis, Barium titanate, MLCC, Tetragonality, Reaction mechanism
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