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J. Korean Ceram. Soc. > Volume 27(5); 1990 > Article
Journal of the Korean Ceramic Society 1990;27(5): 638.
함침 방법의 차이에 따른 Pd, Pt-$SnO_2$의 프로판 가스 감응성 변화
이종흔, 박순자
서울대학교 무기재료공학과
C3H8 Gas Sensitivity of Pd, Pt-$SnO_2$ Gas Sensor with Varying Impregnation Method
ABSTRACT
The C3H8 gas sensitivities of SnO2, Pd-SnO2, Pt-SnO2 gas sensor are looked over with the impregnation method of PdCl2, H2PtCl6 solution on SnO2. The Cl- ion due to incomplete decomposition of PdCl2 at 80$0^{circ}C$ for 30 min decrease the C3H8 gas sensitivity of SnO2, and the sensitivity is increased by the impreganation of H2PtCl6 solution on SnO2 because of its lower decomposition temperature compared with PdCl2. The C3H8 gas sensitivities of Pd-SnO2, Pt-SnO2 impregnated slightly after 1st sintering are larger than that of pure SnO2 sensor because very small amount of Cl- ion exist in sample due to smaller amount of impregnaiton.
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