The influence of different factors on the dual atmosphere effect observed for AISI 441 interconnects used in solid oxide fuel cells
Paper in proceedings, 2019

Interconnects used in solid oxide fuel cells are subjected to dual atmosphere corrosion at 600 °C. In this work we show that the dual atmosphere effect is dependent on the thickness of the steel sheet. For this AISI 441 with varying thicknesses was exposed to dual atmosphere at 600 °C for 336 h. Before and after exposure photographs were taken to analyze the progress of corrosion on the air-facing side of the steel samples. Additionally, scanning electron microscopy and energy dispersive x-ray diffraction (SEM/EDX) analysis was conducted on all exposed samples. It was found that thinner samples showed increased breakaway oxidation than thicker samples.

Author

Claudia Goebel

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Caterina Bo

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Jan-Erik Svensson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Jan Froitzheim

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

ECS Transactions

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

Vol. 91 1 2261-2266

16th International Symposium on Solid Oxide Fuel Cells, SOFC 2019
Kyoto, Japan,

Subject Categories

Materials Chemistry

Metallurgy and Metallic Materials

Corrosion Engineering

DOI

10.1149/09101.2261ecst

More information

Latest update

4/1/2020 8