Efficient dual layer interconnect coating for high temperature electrochemical devices

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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@article{e9508ca0b8f743b4badf6ede458c08fa,
title = "Efficient dual layer interconnect coating for high temperature electrochemical devices",
keywords = "Corrosion, Interconnect, Coating, Parabolic oxidation, Chromia",
publisher = "Pergamon",
author = "Marián Palcut and Lars Mikkelsen and Kai Neufeld and Ming Chen and Ruth Knibbe and Hendriksen, {Peter Vang}",
year = "2012",
doi = "10.1016/j.ijhydene.2012.07.038",
volume = "37",
number = "19",
pages = "14501--14510",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",

}

RIS

TY - JOUR

T1 - Efficient dual layer interconnect coating for high temperature electrochemical devices

A1 - Palcut,Marián

A1 - Mikkelsen,Lars

A1 - Neufeld,Kai

A1 - Chen,Ming

A1 - Knibbe,Ruth

A1 - Hendriksen,Peter Vang

AU - Palcut,Marián

AU - Mikkelsen,Lars

AU - Neufeld,Kai

AU - Chen,Ming

AU - Knibbe,Ruth

AU - Hendriksen,Peter Vang

PB - Pergamon

PY - 2012

Y1 - 2012

N2 - Effects of novel dual layer coatings Co3O4/La0.85Sr0.15MnO3−δ on high temperature oxidation behaviour of candidate steels for interconnects are studied at 1123 K in flowing simulated ambient air (air + 1% H2O) and oxygen. Four alloys are investigated: Crofer 22 APU, Crofer 22 H, E-Brite and AL 29-4C. The reaction kinetics is followed by measuring the mass increase of the samples over time. The oxide scale microstructure and chemical composition are investigated by scanning electron microscopy/energy dispersive spectroscopy. The kinetic data follow the parabolic rate law. It is found that the oxidation reaction is limited by outward Cr3+ diffusion in the chromia scale. The coating effectively reduces the oxidation rate. Reactions and cation inter-diffusion between the coating and the oxide scale are observed. Long term effects of these interactions are discussed and practical implications for interconnect electrochemical performance are suggested.

AB - Effects of novel dual layer coatings Co3O4/La0.85Sr0.15MnO3−δ on high temperature oxidation behaviour of candidate steels for interconnects are studied at 1123 K in flowing simulated ambient air (air + 1% H2O) and oxygen. Four alloys are investigated: Crofer 22 APU, Crofer 22 H, E-Brite and AL 29-4C. The reaction kinetics is followed by measuring the mass increase of the samples over time. The oxide scale microstructure and chemical composition are investigated by scanning electron microscopy/energy dispersive spectroscopy. The kinetic data follow the parabolic rate law. It is found that the oxidation reaction is limited by outward Cr3+ diffusion in the chromia scale. The coating effectively reduces the oxidation rate. Reactions and cation inter-diffusion between the coating and the oxide scale are observed. Long term effects of these interactions are discussed and practical implications for interconnect electrochemical performance are suggested.

KW - Corrosion

KW - Interconnect

KW - Coating

KW - Parabolic oxidation

KW - Chromia

U2 - 10.1016/j.ijhydene.2012.07.038

DO - 10.1016/j.ijhydene.2012.07.038

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 19

VL - 37

SP - 14501

EP - 14510

ER -