采用高温固相反应法制备了电导率为10-1S/cm数量级的LaBMnO3(B=Ca,Sr,Ba)致密扩散障混合导体陶瓷。用化学共沉淀法制备了高温电导率为10-2S/cm数量级的氧化钇稳定氧化锆(yttria stabilized zirconia,YSZ)固体电解质陶瓷。用瓷片复合工艺将致密扩散障陶瓷与YSZ陶瓷复合,制备出了致密扩散障极限电流型氧传感器。对该传感器进行氧敏性能测试,结果表明:以LaBMnO3为致密扩散障碍层、YSZ为固体电解质的极限电流型氧传感器,在体积分数为0～21%氧含量范围内,均能获得较好的极限电流平台,电流最大值达到12mA;出现极限电流平台的电压区间为0.6～1V;氧含量与极限电流呈指数对应关系,反应时间约10s。此传感器制备工艺简单、过程可控,为该传感器的理论与应用研究打下了基础。 LaBMnO3 (B = Ca, Sr, Ba) densely diffused mixed conductor ceramics with the conductivity of 10-1S / cm were prepared by high temperature solid-state reaction. The yttria stabilized zirconia (YSZ) solid electrolyte ceramics with the high temperature conductivity of 10-2S / cm was prepared by chemical coprecipitation method. A dense diffused barrier current limiting oxygen sensor was fabricated by using the ceramic composite process to compound the dense diffusion barrier ceramic with the YSZ ceramic. The oxygen sensor performance test results show that: with LaBMnO3 as a diffusion barrier layer, YSZ solid electrolyte limit current oxygen sensor, in the volume fraction of 0 ~ 21% oxygen content, can get better The maximum current of the current platform reaches 12mA. The voltage range where the limit current platform appears is 0.6 ~ 1V. The oxygen content is exponential with the limiting current, and the reaction time is about 10s. The sensor preparation process is simple, the process controllable, laid the foundation for the sensor theory and application research.