Interaction mechanisms between slurry coatings and solid oxide fuel cell interconnect alloys during high temperature oxidation

被引：31

作者：

Persson, A. H. ^{[1
]}

Mikkelsen, L. ^{[1
]}

Hendriksen, P. V. ^{[1
]}

Somers, M. A. J. ^{[2
]}

机构：

[1] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Div Fuel Cells & Solid State Chem, DK-4000 Roskilde, Denmark

[2] Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 521卷

关键词：

Oxidation; Microstructure; Diffusion; Surfaces and interfaces; Fuel cells; Coating materials; CATION TRACER DIFFUSION; FERRITIC STAINLESS-STEELS; POINT-DEFECTS; METALLIC INTERCONNECTS; TRANSPORT-PROPERTIES; CATHODE MATERIALS; SPINELS; CO3O4; LAYERS; FE;

D O I：

10.1016/j.jallcom.2011.12.095

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Six different coatings consisting of fluorite-, corundum-, spinel-or perovskite-type oxides were deposited on a Fe22Cr alloy (Crofer 22APU) and oxidized at 900 degrees C in moisturized air. Five of the coatings prevented break-away oxidation otherwise observed for the uncoated alloy, and the parabolic oxidation rate constant was reduced with 50-90% of that for uncoated alloy. One coating consisting of MnCo2O4 did not significantly affect the oxidation rate of the alloy, and just as for uncoated samples break-away oxidation occurred for MnCo2O4 coated samples. The interaction mechanisms between the growing oxide scales and applied coatings can be classified according to three types. (C) 2012 Elsevier B.V All rights reserved.

引用

页码：16 / 29

页数：14

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