新型致密扩散障极限电流氧传感器的制备及其性能  

Preparation and Propeties of New Dense Diffusion Barrier Limiting Current Oxygen Sensor

作　　者：江浩[1] 简家文[1] 陈康[1] 顾媛媛[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《硅酸盐学报》2012年第12期1818-1822,共5页Journal of The Chinese Ceramic Society

基　　金：浙江省重大科技专项计划项目(2011C16037)资助

摘　　要：采用固相法制备NiO粉体。根据X射线衍射分析和扫描电子显微镜观察结果,用NiO和3Y20A[含有20%(质量分数)氧化铝的3%(摩尔分数)Y2O3稳定的ZrO2]质量比为1:1制备的混合导体作为致密扩散障层,采用Pt浆料粘合法将其与8YSZ[8%(摩尔分数)Y2O3稳定的ZrO2]固体电解质叠层制成致密扩散障型极限电流氧传感器,对其敏感特性进行了研究。结果表明:该传感器在923K和973K、氧气体积分数为1%～40%范围内具有良好的测氧特性;在氧气体积分数为1%～25%范围内极限电流与氧体积分数之间存在良好的线性关系。响应时间曲线表明:在不同氧体积分数下传感器重复性好、响应时间快。The NiO powder was synthesized by solid phase method. According to the results of X-ray diffraction and scanning electron microscopy, the mixture of NiO and 3Y20A with mass ratio 1：1 was prepared as the mixed ion-electron conductor. A limiting current oxygen sensor using 8YSZ （8% （mole fraction） yttira stabilized zirconia） as solid electrolyte layer and the mixed ion-electron conductor as dense diffusion barrier was developed successfully via a Pt liquid agglutination method. And the properties of the sensor were tested. The results indicate that the sensor has a good oxygen measurement characteristic at 923 K and 973 K with oxygen concentration varying from 1% to 40%. It shows a good linear relationship between the limiting current of sensor and oxygen concentration when oxygen concentration was in the range of 1%-25%. The response time curves show that the sensor has good repeatability and fast response time at different oxygen concentrations.

关 键 词：氧传感器 氧化镍 混合导体 极限电流 

分 类 号：TP211.2[自动化与计算机技术—检测技术与自动化装置]