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Mechanical and microstructural charaterization of YSZ/Al2O3 /CeO2 plasma Sprayed coatings

In the present work, the surface characterization of YSZ/Al2O3 /CeO2 plasma sprayed coatings was performed to understand the surface characteristics. The content of the Yttria-stabilized zirconia (YSZ) was 60 wt.% , where alumina was varied from 30 to 38 wt.% and CeO2 from 2 to 10 wt.%, respectively. Ceramic coatings with a different percentage variation of composite materials were used to increase layer strength on a substrate of SS-304. The SEM micrographs were analysed to understand the features present on the surface of coatings, and XRD analysis was done to know the phases present in the coatings. Microhardness and porosity decrease with the addition of CeO2 in the YSZ-based coatings.