Life prediction of coated and uncoated metallic interconnect for solid oxide fuel cell applications

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

doi:10.1016/j.jpowsour.2008.12.143

Life prediction of coated and uncoated metallic interconnect for solid oxide fuel cell applications

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

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

84 Scopus citations

Abstract

In this paper, we present an integrated experimental and modeling methodology in predicting the life of coated and uncoated metallic interconnect (IC) for solid oxide fuel cell (SOFC) applications. The ultimate goal is to provide cell designer and manufacture with a predictive methodology such that the life of the IC system can be managed and optimized through different coating thickness to meet the overall cell designed life. Crofer 22 APU is used as the example IC material system. The life of coated and uncoated Crofer 22 APU under isothermal cooling was predicted by comparing the predicted interfacial strength and the interfacial stresses induced by the cooling process from the operating temperature to room temperature, together with the measured oxide scale growth kinetics. It was found that the interfacial strength between the oxide scale and the Crofer 22 APU substrate decreases with the growth of the oxide scale, and that the interfacial strength for the oxide scale/spinel coating interface is much higher than that of the oxide scale/Crofer 22 APU substrate interface. As expected, the predicted life of the coated Crofer 22 APU is significantly longer than that of the uncoated Crofer 22 APU.

Original language	English
Pages (from-to)	1044-1050
Number of pages	7
Journal	Journal of Power Sources
Volume	189
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2008.12.143
State	Published - Apr 15 2009
Externally published	Yes

Funding

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

Funders	Funder number
U.S. Department of Energy	DE-AC05-76RL01830
National Energy Technology Laboratory

Keywords

Crofer 22 APU
Ferritic stainless steel interconnect
Indentation test
Oxide scale
Solid oxide fuel cell (SOFC)
Spinel coating

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2008.12.143

Cite this

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title = "Life prediction of coated and uncoated metallic interconnect for solid oxide fuel cell applications",

abstract = "In this paper, we present an integrated experimental and modeling methodology in predicting the life of coated and uncoated metallic interconnect (IC) for solid oxide fuel cell (SOFC) applications. The ultimate goal is to provide cell designer and manufacture with a predictive methodology such that the life of the IC system can be managed and optimized through different coating thickness to meet the overall cell designed life. Crofer 22 APU is used as the example IC material system. The life of coated and uncoated Crofer 22 APU under isothermal cooling was predicted by comparing the predicted interfacial strength and the interfacial stresses induced by the cooling process from the operating temperature to room temperature, together with the measured oxide scale growth kinetics. It was found that the interfacial strength between the oxide scale and the Crofer 22 APU substrate decreases with the growth of the oxide scale, and that the interfacial strength for the oxide scale/spinel coating interface is much higher than that of the oxide scale/Crofer 22 APU substrate interface. As expected, the predicted life of the coated Crofer 22 APU is significantly longer than that of the uncoated Crofer 22 APU.",

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author = "Liu, {W. N.} and X. Sun and E. Stephens and Khaleel, {M. A.}",

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AU - Liu, W. N.

AU - Sun, X.

AU - Stephens, E.

AU - Khaleel, M. A.

PY - 2009/4/15

Y1 - 2009/4/15

N2 - In this paper, we present an integrated experimental and modeling methodology in predicting the life of coated and uncoated metallic interconnect (IC) for solid oxide fuel cell (SOFC) applications. The ultimate goal is to provide cell designer and manufacture with a predictive methodology such that the life of the IC system can be managed and optimized through different coating thickness to meet the overall cell designed life. Crofer 22 APU is used as the example IC material system. The life of coated and uncoated Crofer 22 APU under isothermal cooling was predicted by comparing the predicted interfacial strength and the interfacial stresses induced by the cooling process from the operating temperature to room temperature, together with the measured oxide scale growth kinetics. It was found that the interfacial strength between the oxide scale and the Crofer 22 APU substrate decreases with the growth of the oxide scale, and that the interfacial strength for the oxide scale/spinel coating interface is much higher than that of the oxide scale/Crofer 22 APU substrate interface. As expected, the predicted life of the coated Crofer 22 APU is significantly longer than that of the uncoated Crofer 22 APU.

AB - In this paper, we present an integrated experimental and modeling methodology in predicting the life of coated and uncoated metallic interconnect (IC) for solid oxide fuel cell (SOFC) applications. The ultimate goal is to provide cell designer and manufacture with a predictive methodology such that the life of the IC system can be managed and optimized through different coating thickness to meet the overall cell designed life. Crofer 22 APU is used as the example IC material system. The life of coated and uncoated Crofer 22 APU under isothermal cooling was predicted by comparing the predicted interfacial strength and the interfacial stresses induced by the cooling process from the operating temperature to room temperature, together with the measured oxide scale growth kinetics. It was found that the interfacial strength between the oxide scale and the Crofer 22 APU substrate decreases with the growth of the oxide scale, and that the interfacial strength for the oxide scale/spinel coating interface is much higher than that of the oxide scale/Crofer 22 APU substrate interface. As expected, the predicted life of the coated Crofer 22 APU is significantly longer than that of the uncoated Crofer 22 APU.

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KW - Ferritic stainless steel interconnect

KW - Indentation test

KW - Oxide scale

KW - Solid oxide fuel cell (SOFC)

KW - Spinel coating

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Life prediction of coated and uncoated metallic interconnect for solid oxide fuel cell applications

Abstract

Funding

Keywords

UN SDGs

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