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

作　　者：龚树萍[1] 黎步银[1] 周东祥[1] 

机构地区：[1]华中理工大学固电系

出　　处：《云南大学学报（自然科学版）》1997年第2期184-186,189,共4页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：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.

关 键 词：湿度传感器 温度补偿 铬酸铅 湿敏电阻 

分 类 号：TH837[机械工程—仪器科学与技术] TP212[机械工程—精密仪器及机械]