Effect of substrate thickness on oxide scale spallation for solid oxide fuel cells

W. N. Liu; X. Sun; E. Stephens; M. Khaleel

doi:10.1016/j.corsci.2011.03.025

Effect of substrate thickness on oxide scale spallation for solid oxide fuel cells

W. N. Liu
, X. Sun
, E. Stephens
, M. Khaleel

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

In this paper, the effect of the ferritic interconnect thickness on the delamination/spallation of the oxide scale was investigated experimentally and numerically. At the operating environment of solid oxide fuel cells (SOFCs), a combination of growth stress with thermal stresses may lead to scale delamination/buckling and eventual spallation during SOFC stack cooling, even leading to serious degradation of cell performance. The experimental and numerical results show that the interfacial shear stresses increase with the growth of the oxide scale and also with the thickness of the ferritic substrate, i.e., the thick ferritic substrate can easily lead to scale delamination and spallation.

Original language	English
Pages (from-to)	2406-2412
Number of pages	7
Journal	Corrosion Science
Volume	53
Issue number	7
DOIs	https://doi.org/10.1016/j.corsci.2011.03.025
State	Published - Jul 2011
Externally published	Yes

Funding

Pacific Northwest National Laboratory is operated for the US Department of Energy by Battelle under Contract DE-AC05-76RL01830. The work was funded as part of the Solid-State Energy Conversion Alliance Core Technology Program by the US Department of Energy’s National Energy Technology Laboratory.

Keywords

Experiments
Ferritic alloy
Interface
Modeling studies
Oxidation and internal oxidation

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10.1016/j.corsci.2011.03.025

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title = "Effect of substrate thickness on oxide scale spallation for solid oxide fuel cells",

abstract = "In this paper, the effect of the ferritic interconnect thickness on the delamination/spallation of the oxide scale was investigated experimentally and numerically. At the operating environment of solid oxide fuel cells (SOFCs), a combination of growth stress with thermal stresses may lead to scale delamination/buckling and eventual spallation during SOFC stack cooling, even leading to serious degradation of cell performance. The experimental and numerical results show that the interfacial shear stresses increase with the growth of the oxide scale and also with the thickness of the ferritic substrate, i.e., the thick ferritic substrate can easily lead to scale delamination and spallation.",

keywords = "Experiments, Ferritic alloy, Interface, Modeling studies, Oxidation and internal oxidation",

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journal = "Corrosion Science",

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T1 - Effect of substrate thickness on oxide scale spallation for solid oxide fuel cells

AU - Liu, W. N.

AU - Sun, X.

AU - Stephens, E.

AU - Khaleel, M.

PY - 2011/7

Y1 - 2011/7

N2 - In this paper, the effect of the ferritic interconnect thickness on the delamination/spallation of the oxide scale was investigated experimentally and numerically. At the operating environment of solid oxide fuel cells (SOFCs), a combination of growth stress with thermal stresses may lead to scale delamination/buckling and eventual spallation during SOFC stack cooling, even leading to serious degradation of cell performance. The experimental and numerical results show that the interfacial shear stresses increase with the growth of the oxide scale and also with the thickness of the ferritic substrate, i.e., the thick ferritic substrate can easily lead to scale delamination and spallation.

AB - In this paper, the effect of the ferritic interconnect thickness on the delamination/spallation of the oxide scale was investigated experimentally and numerically. At the operating environment of solid oxide fuel cells (SOFCs), a combination of growth stress with thermal stresses may lead to scale delamination/buckling and eventual spallation during SOFC stack cooling, even leading to serious degradation of cell performance. The experimental and numerical results show that the interfacial shear stresses increase with the growth of the oxide scale and also with the thickness of the ferritic substrate, i.e., the thick ferritic substrate can easily lead to scale delamination and spallation.

KW - Experiments

KW - Ferritic alloy

KW - Interface

KW - Modeling studies

KW - Oxidation and internal oxidation

UR - https://www.scopus.com/pages/publications/79955778077

U2 - 10.1016/j.corsci.2011.03.025

DO - 10.1016/j.corsci.2011.03.025

M3 - Article

AN - SCOPUS:79955778077

SN - 0010-938X

VL - 53

SP - 2406

EP - 2412

JO - Corrosion Science

JF - Corrosion Science

IS - 7

ER -

Effect of substrate thickness on oxide scale spallation for solid oxide fuel cells

Abstract

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Keywords

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