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J. Korean Ceram. Soc. > Volume 26(4); 1989 > Article
Journal of the Korean Ceramic Society 1989;26(4): 493.
수열반응에 의한 고순도 극미립자 BaTiO3 분말합성
김경용, 김윤호, 손용배
한국과학기술연구원 정밀요업재료연구실
Preparationof High Purity, Submicron BaTiO3 Powder Prepared by Hydrothermal Reaction
High purity, submicron BaTiO3 powder was prepared by a hydrothermal technique using Ba(OH)2.8H2O, TiCl4 and NH4OH as starting raw materials. The submicron BaTiO3 powder was synthesized at 130~23$0^{circ}C$ for 2.5h to yield highly crystalline particles with a narrow particle distribution. The mole ratio of Ba(OH)2.8H2O/TiO(OH)2 was 1.5. It is possible to obtain BaTiO3 with Ba : Ti=1.00$pm$0/01. The samples densified well at 13$25^{circ}C$, showing a uniform and fine grain structure. The grain size ranged between 0.3 and 0.5${mu}{textrm}{m}$. The products obtained by hydrothermal treatment at various temperatures from 130 to 23$0^{circ}C$ were characterized by XRD, DTA, BET and SEM etc.
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