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J. Korean Ceram. Soc. > Volume 26(6); 1989 > Article
Journal of the Korean Ceramic Society 1989;26(6): 783.
BaTiO3이론조성과 BaCO3가 과잉인계에서 팽창과 상의 관한 연구
김종옥, 이풍헌1, 임대영1
배재대학교 무기재료공학과
1홍익공업전문대학교 요업과
Effect of Abnormal Expansion in the Equimolecular Mixture BaCO3 and TiO2 Added Excess BaCO3
ABSTRACT
The reason of abnormal expansion in BaTiO3 synthesized in the equimolecular mixture and synthesized in Ba-rich region were investigated at the point of crystal and microstructure. The shrinkage and the expansion of the mixtures in BaCO3-TiO2 system were determined by the mass of BaCO3 added to the equimolecular BaCO3 and TiO2, Ba2TiO4 which was much formed and BaTi2O3 were important crystal in the reaction of Ba-rich region. Sintering phenomena of unreacted BaCO3 activity and the secondary phase caused to generate microcracks in the specimens.
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