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借助扫描式电子显微镜发现ZnO-Li2O-V2O5系湿敏材料是由LiZnVO4玻璃包裹ZnCr2O4晶粒并相互粘结而成,根据LiZnVO4玻璃的形成过程及其微观结构,提出了该系湿敏材料的感湿机理,认为嵌在玻璃相空穴中的Li+和Li2O分别构成了玻璃本体电导和感湿点;由此解释了实测的电阻-湿度特性曲线,并提出可以分别通过调节Li+和Li2O的浓度改变材料的本体电阻和感湿灵敏度.
Using scanning electron microscopy, it was found that ZnO-Li2O-V2O5-based humidity-sensitive material is composed of LiZnVO4 glass coated with ZnCr2O4 grains and bonded to each other. According to the formation process and microstructure of LiZnVO4 glass, Wet mechanism. It is considered that the Li + and Li2O embedded in the glass phase cavity respectively constitute the conductance and the wet spot of the glass body; thus, the measured resistance-humidity characteristic curve is explained and the change of the concentration of Li + and Li2O can be respectively adjusted Material body resistance and sense of wet sensitivity.