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Coatings 2016, 6(3), 36; doi:10.3390/coatings6030036

High Temperature Corrosion Studies of a Zirconia Coating: Implications for Waste-to-Energy (WTE) Plants

1
Section for Mineralogy, Petrology and Geochemistry, Department for Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, Theresienstrasse 41, 80333 Munich, Germany
2
Fraunhofer UMSICHT, An der Maxhütte 1, 92237 Sulzbach-Rosenberg, Germany
3
MARTIN GmbH für Umwelt- und Energietechnik, Leopoldstrasse 248, 80807 Munich, Germany
4
Zweckverband Müllverwertung Schwandorf, Alustrasse 7, 92421 Schwandorf, Germany
5
Deutsche Edelstahlwerke GmbH, Sonderwerkstoffe, Entwicklung und Innovation, Oberschlesienstrasse 16, 47807 Krefeld, Germany
6
Rohrwerk Maxhütte GmbH, Franz-Kunze-Straße 1, 92237 Sulzbach-Rosenberg, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Antonella Rossi
Received: 12 July 2016 / Revised: 10 August 2016 / Accepted: 22 August 2016 / Published: 25 August 2016
View Full-Text   |   Download PDF [3178 KB, uploaded 25 August 2016]   |  

Abstract

Corrosion of functional parts within waste-to-energy (WTE) plants significantly reduces their efficiency with respect to maintenance costs. Currently, nickel-based alloy claddings, several millimeters thick, are the state of the art as anti-corrosion coating. Another approach is to utilize thermally sprayed multilayer coatings with a zirconia top-coat. Lab-scale experiments under simulated WTE plant conditions and in situ tests within a WTE plant revealed a partially reduced porosity of the zirconia top-coat after the experiments, enabling the coating to act as a barrier against aggressive gases. In a lab-scale experiment sample the pores are filled up with zirconia, while the pores of the in situ samples are filled up with newly formed metal (Cr, Ni, Fe) oxides. View Full-Text
Keywords: corrosion; zirconia; coating; waste-to-energy; degradation; active oxidation corrosion; zirconia; coating; waste-to-energy; degradation; active oxidation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Müller, D.; Wöllmer, S.; Aßbichler, D.; Murer, M.J.; Heuss-Aßbichler, S.; Rieger, K.; Hill, H.; Härtel, C.; Masset, P.J. High Temperature Corrosion Studies of a Zirconia Coating: Implications for Waste-to-Energy (WTE) Plants. Coatings 2016, 6, 36.

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