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硫酸根离子在α-Fe₂O₃气敏性中的作用

The Function of Surfate Ion On Gas Sensitive Proerties of α-Fe₂O₃ Ceramics

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【Author】 Wen Youping(Hong Ming Electronic Components Factory , Chengdu , China)Yun Zhengzhong (University of Electronic Science and Technology of China, Chengdu)

【机构】国营宏明无线电器材厂；电子科技大学三系；

【摘要】本文研究了用共沉法制备的α-Fe_yO₃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SO₄^2-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SO₄^2-离子在α-Fe₂O₃气敏性中的作用。更多还原

【Abstract】 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.更多还原