二氧化钛陶瓷的湿敏特性  

HUMIDITY RESPONSE OF TITANIA CERAMICS

作　　者：王廷籍[1] 刘小东[1] 关庆彬[1] 

机构地区：[1]中国建筑材料科学研究院

出　　处：《硅酸盐学报》1997年第3期356-359,共4页Journal of The Chinese Ceramic Society

摘　　要：介绍了用锁相放大器来研究金红石相ＴｉＯ２陶瓷的电导、介电损耗、介电常数的实部和虚部的湿度响应，以及表面处理对该湿度响应的影响。提出的“ＴｉＯ２陶瓷水分子薄膜”模型能很好地解释实验结果。The humidity response caused by conductivity and dissipation,which occur in the real and imaginary parts of a dielectric constant in titania ceramics,was investigated using lockin amplifier.The effect of surface treatment on the humidity response was also considered.The calculated results from a simple model of a watermoleculefilmsensorsystem given by the paper are in good agreement with all the experimental results.The paper indicates that water vapor molecules adsorbed on the sensor surface play a very important role in the humidity response process.

关 键 词：二氧化钛陶瓷 传感器 湿度 介电常数 陶瓷 

分 类 号：TQ174.758[化学工程—陶瓷工业] TQ174.12[化学工程—硅酸盐工业]