Evaluation of protective La0.67Sr0.33MnO 3-δ coatings on various stainless steels used for solid oxide fuel cell interconnects

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Title:	Evaluation of protective La0.67Sr0.33MnO 3-δ coatings on various stainless steels used for solid oxide fuel cell interconnects
Authors:	李雄;Huang, Jian-Jia;Chu, Chun-Lin;Yang, Peng;Chang, Tien-Chan;Lee, Shyong;Yang, Jung-Yen
Contributors:	工學院機械工程學系
Keywords:	Alloys;Applied sciences;Austenitic stainless steels;Capacitors. Resistors. Filters;Chromium oxides;Direct energy conversion and energy accumulation;Duplex stainless steels;Electrical engineering. Electrical power engineering;Electrical power engineering;Electrochemical conversion: primary and secondary batteries, fuel cells;Energy;Energy. Thermal use of fuels;Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc;Exact sciences and technology;Ferritic stainless steels;Fuel cells;Heat treatment;Interconnections;Magnetron sputtering;Perovskite structure;Solid oxide fuel cells;Stainless steels;Various equipment and components
Date:	2013-07-22
Issue Date:	2026-04-23 15:08:50 (UTC+8)
Publisher:	The American Society of Mechanical Engineers(ASME);New York, NY: ASME
Abstract:	摘要： Four metallic alloys, namely 2205 duplex stainless steel (2205DSS), ZMG232, and stainless steels SS430 and SS304 are investigated for use as interconnects in solid oxide fuel cells (SOFCs). A La0.67Sr0.33MnO3–δ (LSMO) film is deposited on these metallic-alloy substrates using a pulsed-DC magnetron sputtering system in the reactive mode, leading to the formation of a cubic perovskite structure. The coated alloys are then subjected to oxidizing heat treatments in air at 600 °C, 700 °C, 800 °C, and 900 °C, and their microstructures as well as electrical resistances are evaluated. The electrical resistance measurements are performed at 800 °C, and the area-specific resistance (ASR) of the film-coated 2205DSS alloy is found to be less than that of the uncoated alloy. This is because a thick layer of Cr2O3 and a (Mn, Fe)Cr2O4 spinel phase layer are formed, and some divalent metallic ions migrate into the Cr2O3 layer. It is found that alloys coated with a thin film of LSMO are more suitable for use as metallic interconnects in SOFCs with intermediate-temperature operating ranges. 其他題名： J. Electrochem. En. Conv. Stor 出版者： New York, NY: ASME 出版日期： 2013-04-01 出處： Journal of electrochemical energy conversion and storage, 2013-04, Vol.10 (2), p.1-6 資源來源： Alma/SFX Local Collection 版權： 2014 INIST-CNRS 識別號： ISSN: 2381-6872 識別號： ISSN: 1550-624X 識別號： EISSN: 1551-6989 識別號： DOI: 10.1115/1.4023579
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