| Title | Microstructure, mechanical properties and thermal shock resistance of plasma sprayed nanostructured zirconia coatings |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2011 |
| Authors | Di Girolamo, G., Marra F., Blasi C., Serra Emanuele, and Valente T. |
| Journal | Ceramics International |
| Volume | 37 |
| Pagination | 2711-2717 |
| ISSN | 02728842 |
| Keywords | Atmospheric plasma spraying, C. Hardness, C. Thermal shock resistance, Coating microstructures, Complex microstructures, Crystal microstructure, D. ZrO<sub>2</sub>, Equiaxed grains, High porosity, Indentation load, Mechanical properties, Nano-structured, Plasma jets, Plasma sprayed, Plasma spraying, Pollution control, Powder coatings, Protective coatings, Scanning electron microscopy, Sprayed coatings, Thermal applications, Thermal shock, Thermal shock resistance, Thermal spraying, Vickers microhardness, X ray diffraction, X ray diffraction analysis, Yttria stabilized zirconia, Zirconia, Zirconia coatings |
| Abstract | Nanostructured yttria stabilized zirconia (YSZ) coatings were deposited by Atmospheric Plasma Spraying (APS). X-ray diffraction (XRD) was used to investigate their phase composition, while scanning electron microscopy (SEM) was employed to examine their microstructure. The coatings showed a unique and complex microstructure composed of well-melted splats with columnar crystal structure, partially melted areas, which resembled the morphology of the powder feedstock, and equiaxed grains. Vickers microhardness of nanostructured zirconia coatings was similar to that of the conventional ones and strongly depended on the indentation load. Otherwise, a higher thermal shock resistance was found. This effect was addressed to the retention of nanostructured areas in coating microstructure and to the corresponding high porosity. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
| Notes | cited By 43 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960294425&doi=10.1016%2fj.ceramint.2011.04.024&partnerID=40&md5=cb2eb4743ffe65f213fe0291c0662102 |
| DOI | 10.1016/j.ceramint.2011.04.024 |
| Citation Key | DiGirolamo20112711 |
