Study on the Utilization of Barite in Making Carbon Film Ceramic Resistor

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J. Korean Ceram. Soc. > Volume 19(2); 1982 > Article

Journal of the Korean Ceramic Society 1982;19(2): 95.

탄소피막 저항기용 자기소체 제조에 있어 Barite 활용에 관한 연구

박정현, 전병세, 배원태

연세대학교 요업공학과

Study on the Utilization of Barite in Making Carbon Film Ceramic Resistor

ABSTRACT

Instead of barium carbonate, domestic barite was used as the flux in manufacturing theinsulating porcelain. To avoid the problems arising from the decomposition of barite in the body during firing, BaO.$Al_2O_3$ was synthesized at $1300^{circ}C$ for 5 hours. synthetic BaO.$Al_2O_3$ was mixed with other materials such as kaoline, alumina, clay, dolomite. The RO content (CaO. MgO. BaO) of the batches was varied from range of 4 to 14wt. % at 2wt. % - intervals, and firing temperature was varied from 1280 to 140$0^{circ}C$-at 4$0^{circ}C$ intervals The properties such as water absorption, bulk density. mechnical strength, specific resistance, and linear shrinkage were measured. The body containing 12 wt.% of RO content showed the satisfactory for the application in the Fixed Carbon Film Resistor.