IMPEDANCE SPECTROSCOPY STUDY OF SUPERPLASTIC 0.3MOL-PERCENT CUO MODIFIED 3YTZP OXYGEN SENSOR MATERIAL

Y2O3 stabilized ZrO2 ceramics are commonly used as oxygen sensor mater ials, eg in the well known Lambda sensor for automotive application or in high temperature oxygen probes for flue gases. Recently these comp ounds also become important for their superplastic deformation charact eristics. In ceramic sensor fabrication, ceramics are often required i n various shapes. The superplastic deformation of 3 mol% Y2O3 stabiliz ed tetragonal zirconia polycrystals (3YTZP) modified with 0.3 mol% CuO and its influence on electrical and structural properties were studie d.