改性PbCrO_4湿敏电阻温度特性研究

On Humidity-Temperature Characteristics of Modified PbCrO 4-V 2O 5 Ceramic Humidity Resistors

用Ｖ２Ｏ５对体控制型ＰｂＣｒＯ４湿敏材料进行改性．实验表明，当ＰｂＣｒＯ４与Ｖ２Ｏ５的摩尔比为恰当比例时，在温度为４０～８０℃相对湿度为３０％～９０％ＲＨ的范围内，材料的湿阻特性几乎与温度无关。

Different amounts of V 2O 5 have been used to modify the characteristics of body-controlled PbCrO 4 humidity-sensing ceramics. Experimental results show that the humidity sensitivity in the relative humidity of 30%-90%RH is almost independent on temperature from 40 to 80℃ which is abtained in the element with PbCrO 4-0.3 V 2O 5 material. The results also suggest that further improvement of temperature independency of humidity be expected by controlling the molar ratio of PbCrO3 4 and V 2O 5.