Oxidation behavior of metallic interconnect coated with La–Sr–Mn film by screen painting and plasma sputtering

Two Fe-based alloys, specific company developed and designated as Crofer22APU and ZMG232, have been extensively evaluated and considered as outstanding metallic interconnect materials. Both these alloys contain significant and minute amounts of elemental Cr and La, respectively. In this study, they...

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Veröffentlicht in:International journal of hydrogen energy 2009, Vol.34 (1), p.422-434
Hauptverfasser: Chu, Chun-Lin, Lee, Jye, Lee, Tien-Hsi, Cheng, Yung-Neng
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container_title International journal of hydrogen energy
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creator Chu, Chun-Lin
Lee, Jye
Lee, Tien-Hsi
Cheng, Yung-Neng
description Two Fe-based alloys, specific company developed and designated as Crofer22APU and ZMG232, have been extensively evaluated and considered as outstanding metallic interconnect materials. Both these alloys contain significant and minute amounts of elemental Cr and La, respectively. In this study, they are coated with films of La–Sr–Mn (LSM) using two methods, screen painting and plasma sputtering, to determine the effect of LSM on corrosion resistance and electrical resistivity of Crofer22APU and ZMG232. They were then treated in a simulated oxidizing environment at 800 °C for 200 h. Analytical results indicate that the LSM film changed the oxidation behavior of the base alloys, Crofer22 APU and ZMG232. The bare alloys formed Cr 2O 3, while the coated alloys produced (Mn, Fe) Cr 2O 4. The electrical resistance of the former oxide at high temperature is several thousand times higher than that of the latter oxide. This remarkable effect of the LSM film on the electrical characteristics warrants further in-depth research.
doi_str_mv 10.1016/j.ijhydene.2008.09.091
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subjects Alloys
Applied sciences
Chromium
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Ferritic stainless steels
Ferrous alloys
Fuel cells
Interconnect
Oxidation
Oxides
Paints
Plasma-sputtering coating
Screen painting
Solid oxide fuel cell (SOFC)
Sputtering
title Oxidation behavior of metallic interconnect coated with La–Sr–Mn film by screen painting and plasma sputtering
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