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不久前,一种新型敏感材料ZnSnO_3脱颖而出,其灵敏皮,响应时问都非常优越,是一种很有前途的材料,而其各种参数、特性还是空白,这对推论其机制是必不可少的。本文在这方面作些探索,对其敏感机制作一些讨论。用化学合成方法制备的ZnSnO_3沉积物,经过脱水、烧结等工艺,然后磨成粉料,将粉料压成φ8mm,高6mm的圆柱体,放入有电极的夹具中,加热,作出ρ—T曲线,做成器件,放入真空室,测试真空度与元件电阻关系。另外,还做了真空下的ZnSnO_3元件对各种还原性气体的响应实验,实验结论:ZnSnO_3材料是一种优良的气敏传感器材料,做为酒敏元件,具有温度范围大,灵敏度高等优点,同时也是一种高温热敏材料,最佳工作温度为285～380℃在这段温度范围内,零点温度漂移最小。
Not long ago, a new type of sensitive material, ZnSnO 3, came to the fore. Its sensitive skin and response time were excellent and it was a promising material. However, its various parameters and properties were still blank, which is necessary to deduce the mechanism of. This article explores in this area and makes some discussions about its sensitive mechanisms. The ZnSnO_3 deposit prepared by the chemical synthesis method is subjected to dehydration and sintering processes and then pulverized into a powder. The powder is pressed into a cylinder of φ8 mm and a height of 6 mm into a jig having an electrode and heated to make ρ-T Curve, made of devices, into the vacuum chamber, test the relationship between vacuum and component resistance. In addition, ZnSnO_3 under vacuum was also tested for various reductant gases. The experimental results show that ZnSnO_3 is an excellent gas sensor, which has the advantages of large temperature range and high sensitivity, At the same time is also a high temperature thermal materials, the best working temperature is 285 ~ 380 ℃ in this temperature range, zero temperature drift minimum.