Zirconia oxygen sensors processed via slip casting

Applications of zirconia ceramics in fuel cells or sensors demand high qual ity products. It means that each step of obtainment must be rigorously cont roled for the stability of the device production. Classically zirconia oxid e based sensors are sintered at temperatures as high as possible and no cri terion an used to define the most convenient heat treatment. In this work d etails of slip casting applied to zirconia ceramic conformation are present ed. The specimens obtained show that maximum density and electrical conduct ivity are reached for sintering at 1773 K. Tubes were developed with the ai m to be used in Continuous Osygen Analyzer for combustion efficiency contro l.