| 常温SnO_2-α-Fe_2O_3气敏元件制备 |
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| 引用本文： | 李文范,刘秀英.常温SnO_2-α-Fe_2O_3气敏元件制备[J].应用化学,1993(1). |
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| 作者姓名： | 李文范 刘秀英 |
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| 作者单位： | 中国科学院长春应用化学研究所，中国科学院长春应用化学研究所 130022 长春，130022 长春 |
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| 摘 要： | 用a-Fe_2O_3研制成的加热式气敏元件功耗大(约1.5W)。常温SnO_2-a-Fe_2O_3气敏元件功耗低(约0.1W),灵敏度高,响应恢复快,稳定,具有一定选择性。 气敏元件制备方法:按62.5％,6.2％和31.3％称取SnO_2,a-Fe_2O_3和硅胶,加水研磨2小时,使其呈浆糊状,点入模具内,放入一对φ0.05mm铂丝电极,晾干,脱模,在860～890℃空气中烧结95分钟。
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| 关 键 词： | SnO_2 a-Fe_2O_3 气敏元件 制备 |
PREPARATION OF ROOM TEMPERATURE SnO_2-a-Fe_2O_3 GAS SENSOR |
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| Li Wenfan and Liu Xiuying.PREPARATION OF ROOM TEMPERATURE SnO_2-a-Fe_2O_3 GAS SENSOR[J].Chinese Journal of Applied Chemistry,1993(1). |
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| Authors: | Li Wenfan and Liu Xiuying |
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| Abstract: | A room temperature gas sensor has been prepared from SnO_2-a-Fe_2O_3 without doping of noble metals. The sensor has a large specific surface area and higher sensitivity for H_2, coal gas and LPG, but insensitive to CO and CH_4. Its response time is about 25 seconds, recovery time is about 21 seconds, and energy consumption of 0. 1 W. |
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| Keywords: | SnO_2 a-Fe_2O_3 gas sensor preparation |
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