Archivio Istituzionale della RicercaIn this work three experimental glass compositions have been applied and tested on ferritic stainless steel (FSS) substrates with and without yttria-stabilized zirconia (YSZ) coating deposited by plasma spraying. Samples have been tested at 780°C in static air up to 1000 hours to investigate the materials compatibility, stability and interactions at the interfaces. Microstructural changes and migration of elements have been characterized postexperiment in cross-section by means of scanning electron microscopy and energy dispersive X-ray analysis. Two of the tested compositions resulted well adherent to the metal substrate for the whole test duration and the interface evolved with the formation of a stable Cr, Mn-rich layer due to the steel oxidation. The application of YSZ allowed all the glass composition to bond to the substrate and effectively act as a diffusion barrier limiting the diffusion of the substrate elements.
Effect of YSZ Coatings as Diffusion Barrier between Glass Sealing and Steel / Spotorno, R.; Fracchia, Elisa; Schiller, G.; Piccardo, P.. - In: ECS TRANSACTIONS. - ISSN 1938-5862. - ELETTRONICO. - 78:(2017), pp. 1749-1758. ((Intervento presentato al convegno 15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 tenutosi a Hollywood nel 23 July 2017 through 28 July 2017 [10.1149/07801.1749ecst].
Effect of YSZ Coatings as Diffusion Barrier between Glass Sealing and Steel
FRACCHIA, ELISA;
2017
Abstract
In this work three experimental glass compositions have been applied and tested on ferritic stainless steel (FSS) substrates with and without yttria-stabilized zirconia (YSZ) coating deposited by plasma spraying. Samples have been tested at 780°C in static air up to 1000 hours to investigate the materials compatibility, stability and interactions at the interfaces. Microstructural changes and migration of elements have been characterized postexperiment in cross-section by means of scanning electron microscopy and energy dispersive X-ray analysis. Two of the tested compositions resulted well adherent to the metal substrate for the whole test duration and the interface evolved with the formation of a stable Cr, Mn-rich layer due to the steel oxidation. The application of YSZ allowed all the glass composition to bond to the substrate and effectively act as a diffusion barrier limiting the diffusion of the substrate elements.
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https://hdl.handle.net/11583/2679555