Coatings for SOFC interconnects in fuel side environments
Paper i proceeding, 2015

This study focuses on examining the effect of PVD coatings on the oxidation performance of interconnects in fuel side environments. The ferritic steels Sanergy HT and AISI 441 were coated with nanoscale thick rare earth oxides of Ce and La. Additionally, Sanergy HT was also coated with Cu, Co and Ce/Co. The samples were exposed at 850°C in Ar-5% H 2 -3% H 2 O in a tubular furnace. Chemical analysis on the samples was subsequently performed with SEM/EDX and XRD. It was established that the Ce and La coatings brought about a ≈4x reduction in the oxidation rate while the presence of a metallic phase in the oxide (Cu and Co) negatively affected oxidation performance. Further, the La coating resulted in the formation of a perovskite phase, showing that the intrinsic electronic properties of the oxide can be tailored using coatings.

Författare

Rakshith Nugehalli Sachitanand

Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Mohammad Sattari

Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Jan-Erik Svensson

Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Jan Froitzheim

Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

ECS Transactions

1938-5862 (ISSN) 1938-6737 (eISSN)

Vol. 68 1575-1580

Ämneskategorier

Materialteknik

Nanoteknik

Korrosionsteknik

DOI

10.1149/06801.1575ecst

ISBN

9781607685395