Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5439062 | Ceramics International | 2017 | 7 Pages |
Abstract
Fully stabilized zirconia containing 8Â mol% of yttria was synthesized by solid state reaction method and deposited as a thick film by plasma spray coating. The crystal structure and phases developed were characterized by X-ray diffraction (XRD). The surface structure, surface morphology and microstructure developed were studied by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The actual doping content was measured by electron probe micro-analyzer(EPMA). The plasma sprayed YSZ was characterized for its electrolytic properties by ac and dc conductivity measurements. The maximum conductivity for plasma sprayed YSZ was found to be â1.62 Scmâ1, which was lesser than the conductivity of standard 8YSZ of â1.03 Scmâ1 at pO2=0.21Â atm. However; conductivity trends in the arrhenius plot was observed to be similar for entire YSZ's, suggesting that the conductivity mechanism is same and dominated by oxygen ion conductivity independent of oxygen partial pressure. These promising electrolytic properties of thermal sprayed YSZ suggest that the thermal spray coating method may lead to be used as a potential method for the fabrication of NOx sensor.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Chanjin Son, Aman Bhardwaj, Jae-Woon Hong, Jin-Wook Kim, Heung-Soo Moon, Hyo-Seop Noh, Sun-Ju Song,