Evaluating candidate materials for balance of plant components in SOFC: Oxidation and Cr evaporation properties
Mareddy Jayanth Reddy, Jan‐Erik Svensson, Jan Froitzheim
Abstract
Balance of plant (BOP) components made of metallic materials in solid oxide fuel cells are subject to high-temperature corrosion and are a significant source of volatile chromium species. Prospective Fe and Ni-base alloys, AISI 441, AISI 444, a FeCrAl alloy A197/Kanthal® EF101, alloy 600, and alloy 800H are investigated for their suitability to BOP components. Oxidation kinetics and chromium evaporation were employed to study the selected alloys at 650 °C and 850 °C for 500 h. A197 performed the best while AISI 441 and AISI 444, performed the worst. Pre-oxidation significantly improved the performance of the alloys at 650 ⁰C.
Topics & Concepts
AlloyChromiumMetallurgyCorrosionMaterials scienceEvaporationOxideMetalHigh-temperature corrosionBase metalWeldingThermodynamicsPhysicsAdvancements in Solid Oxide Fuel CellsHigh-Temperature Coating BehaviorsNuclear Materials and Properties