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J. Korean Ceram. Soc. > Volume 34(3); 1997 > Article
Journal of the Korean Ceramic Society 1997;34(3): 323.
Oxalate법에 의한 $BaTiO_3$분체제조에서 시효시 첨가제의 영향
노준형, 신효순, 이대희, 이석기1, 이병교
경북대학교 무기재료공학과
1경북대학교 고분자공학과
Effects of Aging Additives in Preparation of Barium Titanate by Oxalate Process
Particle growth of BT-oxalate was investigated in aging with various additives such as glycerine, chloro-form and NaCl. Their effects on size and morphlogy of particle was examined. It can be known that particle size distributions of BT-oxalate precipitate varied with amounts of these additivies. With small amounts of these additives, particle growth of nonuniform distribution was occurred, but above 1 mole percent of those additives, uniform size distributions of about 0.4 ${mu}{textrm}{m}$ could be obtain. There was little difference among the effects by the kinds of additives. From the decomposition of uniform BT-oxalate, BaTiO3 powders of about 0.3${mu}{textrm}{m}$ could be obtained.
Key words: BT-oxalate, Aging, Additives
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