J Mater Sci Technol ›› 1995, Vol. 11 ›› Issue (5): 345-348.

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Sintering Caβ″/β/α-Al_2O_3 High Temperature Oxygen Sensor

Yanruo HONG;Liansheng LI and Fengge ZHANG(National Laboratory on Solid Electrolytes and Metallurgical Measurements, University of Science and Technology Beijing, Beijing, 100083, China)(To whom correspondence should be addressed)   

  • Received:1995-09-28 Revised:1995-09-28 Online:1995-09-28 Published:2009-10-10

Abstract: An extended-life and ultra-low oxygen sensor has been fabricated by using polycrystalline Caβ″/β/α-Al2O3 as a solid electrolyte. Five reference electrodes CaO+O2, Caβ″/β/α-Al2O3 (powder)+O2,Cr+Cr2O3, Nb+NbO and Mo+MoO2 were tested in order to select a better reference electrode for this sensor. The limit of determining oxygen activity and the extended-life of the sensor were also tested in this study.