Interface Resistance between FeCr Interconnects and La0.85Sr0.15Mn1.1O3

Lars Mikkelsen; Kai Neufeld; Peter Vang Hendriksen

doi:10.1149/1.3205675

Interface Resistance between FeCr Interconnects and La_0.85Sr_0.15Mn_1.1O₃

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Abstract

The long term oxidation behaviour and the electrical interface resistance between FeCr interconnects and La_0,85Sr_0,15Mn_1,1O₃plates was studied by a DC four-point method in air at 750{degree sign}C for 10000 h. The tested FeCr alloys were: Crofer 22 APU, Sanergy HT, Plansee IT10, Plansee IT11, and Plansee IT14. The alloys were slurry sprayed with a dual layer coating consisting of an inner Co₃O₄ layer and an outer layer consisting of La_0,85Sr_0,15Mn_1,1O₃ with some Co₃O₄ added. The microstructure and composition of the oxide scales formed at the interfaces were investigated using SEM/EDX analysis. Low degradation rates of less than 1 mcm2/1000 h were measured on all interfaces. The microstructure analysis showed that a duplex Cr₂O₃-(Mn,Co,Cr)₃O₄ oxide scale with a thickness of 3-5 µm had evolved on the alloys.

Original language	English
Journal	ECS Transactions
Volume	25
Issue number	2
Pages (from-to)	1429-1436
ISSN	1938-6737
DOIs	https://doi.org/10.1149/1.3205675
Publication status	Published - 2009
Event	216th ECS Meeting: EuroCVD 17 and SOFC XI - 11^th International Symposium on Solid Oxide Fuel Cells - Vienna, Austria Duration: 4 Oct 2009 → 9 Oct 2009 Conference number: 216

Conference

Conference	216th ECS Meeting
Number	216
Country/Territory	Austria
City	Vienna
Period	04/10/2009 → 09/10/2009

Bibliographical note

Copyright The Electrochemical Society, Inc. [2009]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).

Keywords

Solid Oxide Fuel Cells
Fuel Cells and hydrogen

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title = "Interface Resistance between FeCr Interconnects and La0.85Sr0.15Mn1.1O3",

abstract = "The long term oxidation behaviour and the electrical interface resistance between FeCr interconnects and La0,85Sr0,15Mn1,1O3 plates was studied by a DC four-point method in air at 750\{degree sign\}C for 10000 h. The tested FeCr alloys were: Crofer 22 APU, Sanergy HT, Plansee IT10, Plansee IT11, and Plansee IT14. The alloys were slurry sprayed with a dual layer coating consisting of an inner Co3O4 layer and an outer layer consisting of La0,85Sr0,15Mn1,1O3 with some Co3O4 added. The microstructure and composition of the oxide scales formed at the interfaces were investigated using SEM/EDX analysis. Low degradation rates of less than 1 mcm2/1000 h were measured on all interfaces. The microstructure analysis showed that a duplex Cr2O3-(Mn,Co,Cr)3O4 oxide scale with a thickness of 3-5 µm had evolved on the alloys.",

keywords = "Solid Oxide Fuel Cells, Fuel Cells and hydrogen, Br{\ae}ndselsceller og brint",

author = "Lars Mikkelsen and Kai Neufeld and Hendriksen, \{Peter Vang\}",

note = "Copyright The Electrochemical Society, Inc. [2009]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).; 216th ECS Meeting : EuroCVD 17 and SOFC XI - 11<sup>th</sup> International Symposium on Solid Oxide Fuel Cells, SOFC-XI ; Conference date: 04-10-2009 Through 09-10-2009",

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N2 - The long term oxidation behaviour and the electrical interface resistance between FeCr interconnects and La0,85Sr0,15Mn1,1O3 plates was studied by a DC four-point method in air at 750{degree sign}C for 10000 h. The tested FeCr alloys were: Crofer 22 APU, Sanergy HT, Plansee IT10, Plansee IT11, and Plansee IT14. The alloys were slurry sprayed with a dual layer coating consisting of an inner Co3O4 layer and an outer layer consisting of La0,85Sr0,15Mn1,1O3 with some Co3O4 added. The microstructure and composition of the oxide scales formed at the interfaces were investigated using SEM/EDX analysis. Low degradation rates of less than 1 mcm2/1000 h were measured on all interfaces. The microstructure analysis showed that a duplex Cr2O3-(Mn,Co,Cr)3O4 oxide scale with a thickness of 3-5 µm had evolved on the alloys.

AB - The long term oxidation behaviour and the electrical interface resistance between FeCr interconnects and La0,85Sr0,15Mn1,1O3 plates was studied by a DC four-point method in air at 750{degree sign}C for 10000 h. The tested FeCr alloys were: Crofer 22 APU, Sanergy HT, Plansee IT10, Plansee IT11, and Plansee IT14. The alloys were slurry sprayed with a dual layer coating consisting of an inner Co3O4 layer and an outer layer consisting of La0,85Sr0,15Mn1,1O3 with some Co3O4 added. The microstructure and composition of the oxide scales formed at the interfaces were investigated using SEM/EDX analysis. Low degradation rates of less than 1 mcm2/1000 h were measured on all interfaces. The microstructure analysis showed that a duplex Cr2O3-(Mn,Co,Cr)3O4 oxide scale with a thickness of 3-5 µm had evolved on the alloys.

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KW - Fuel Cells and hydrogen

KW - Brændselsceller og brint

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