硫酸根离子在α-Fe_2O_3气敏性中的作用  

The Function of Surfate Ion On Gas Sensitive Proerties of α-Fe_2O_3 Ceramics

作　　者：文佑平 恽正中[2] 

机构地区：[1]国营宏明无线电器材厂 [2]电子科技大学三系

出　　处：《传感器技术》1990年第1期12-16,共5页Journal of Transducer Technology

摘　　要：本文研究了用共沉法制备的α-Fe_yO_3粉体做成的烧结型气政元件的性能。通过红外吸收谱分析及差热-热重分析,比较了用不同铁盐做成的样品含OHˉT和SO_4^(2-)离子情况,分析了不同铁盐的吸热、放热,失重情况与灵敏度的关系。最后讨沦了SO_4^(2-)离子在α-Fe_2O_3气敏性中的作用。This paper studies the gas sensitive properties of α-Fe2O3 ceramics manufactured by Coprecipitation. With infrared spectroscope, wefcompared the different amount of OH- and SO42-absorbed on different samples. The relationship between sensitivity and endotherm, exotherm, weight loss is analysed, and the effect of SO42-on the gas sensitivity of α-Fe2O3 is discussed.

关 键 词：硫酸根离子 a-FeO 气敏性 气敏材料 

分 类 号：TN304.9[电子电信—物理电子学]