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

Müller, Dirk ; Wöllmer, Silke; Assbichler, Donja; Murer, Martin J.; Heuss-Assbichler, Soraya; Rieger, Konrad; Hill, Horst; Härtel, Carsten und Masset, Patrick J. (2016): High Temperature Corrosion Studies of a Zirconia Coating: Implications for Waste-to-Energy (WTE) Plants. In: Coatings, Vol. 6, No. 3, 36

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.

• Item Type: Journal article
• Faculties: Geosciences > Department of Earth and Environmental Sciences > Mineralogy, Petrology and Geochemistry
• Subjects: 500 Science > 550 Earth sciences and geology
• ISSN: 2079-6412
• Language: English