Integrity of nanostructured partially stabilized zirconia after plasma spray processing
R.S. Lima, A. Kucuk, C.C. Berndt
Materials Science
Abstract
Nanostructured partially stabilized zirconia powders with different particle size distributions were plasma sprayed under a range of thermal spray parameters. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were applied to analyze the nanostructured powder feedstocks and coatings. These results demonstrated that a feedstock with a broad particle size distribution maintained some of its nanostructure during spraying; whereas a feedstock with a narrow particle size di...Morestribution lost a major proportion of its nanostructure character. The apparent success in spraying anostructured particles can be explained by employing the SEM and XRD analyses.
keywords:Thermal spray; Thermal barrier coatings; Nanostructure; Zirconia–yttria
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