| Fe2O3—SnO2复合气敏材料的气敏性能研究 |
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| 引用本文： | 曾桓兴,文向阳.Fe2O3—SnO2复合气敏材料的气敏性能研究[J].应用化学,1992,9(1):51-55. |
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| 作者姓名： | 曾桓兴 文向阳 |
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| 作者单位： | 中国科学技术大学材料科学与工程系，中国科学技术大学材料科学与工程系 合肥 230026，合肥 230026 |
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| 摘 要： | 本文采用共沉淀方法制备超微粒子原料粉,测试了不同配比材料的气敏灵敏度,并探讨了不同粒度的Fe_2O_3原料与气敏特性之间的关系,提出Fe_2O_3-SnO_2复合气敏材料的气敏机制属体控制与表面控制兼有的混合机制·Fe_2O_3-SnO_2,复合气敏材料,选用CuO掺杂,可制出对乙炔具有高选择性和灵敏度的气敏元件。
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| 关 键 词： | 超微粒氧化铁 气敏机理 乙炔 |
| 收稿时间： | 1990-11-27 |
GAS SENSING CHARACTERISTICS OF Fe_2O_3-SnO_2 COMPOSITE |
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| Zeng Huanxing,Wen Xiangyang.GAS SENSING CHARACTERISTICS OF Fe_2O_3-SnO_2 COMPOSITE[J].Chinese Journal of Applied Chemistry,1992,9(1):51-55. |
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| Authors: | Zeng Huanxing Wen Xiangyang |
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| Institution: | University of Science and Technology of China |
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| Abstract: | The character and mechanism of Fe_2O_3-SnO_2 composite as a gas sensor were studied.The effects of grain size of iron oxides and the ratio Fe_2O_3 to SnO_2 on gas sensing property were examined.The Fe_2O_3-SnO_2 composite as a gas sensing element has a mixed mechanism of bulkcontrolled type and surface-controlled type. The Fe_2O_3-SnO_2 composite doped with CuO, may be used as C_2H_2 gas Sensor. |
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| Keywords: | iron oxides gas sensor mechanism C_2H_2 |
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