The structure and properties of plasma sprayed iron oxide doped manganese cobalt oxide spinel coatings for SOFC metallic interconnectors

J. Puranen (Corresponding Author), Juha Lagerbom, L. Hyvärinen, M. Kylmälahti, Olli Himanen, Mikko Pihlatie, Jari Kiviaho, P. Vuoristo

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Abstract

Manganese cobalt oxide spinel doped with Fe2O3 was studied as a protective coating on ferritic stainless steel interconnects. Chromium alloying causes problems at high operation temperatures in such oxidizing conditions where chromium compounds evaporate and poison the cathode active area, causing the degradation of the solid oxide fuel cell. In order to prevent chromium evaporation, these interconnectors need a protective coating to block the chromium evaporation and to maintain an adequate electrical conductivity. Thermal spraying is regarded as a promising way to produce dense and protective layers. In the present work, the ceramic Mn-Co-Fe oxide spinel coatings were produced by using the atmospheric plasma spray process. Coatings with low thickness and low amount of porosity were produced by optimizing deposition conditions. The original spinel structure decomposed because of the fast transformation of solid-liquid-solid states but was partially restored by using post-annealing treatment.
Original languageEnglish
Pages (from-to)154-159
Number of pages6
JournalJournal of Thermal Spray Technology
Volume20
Issue number1-2
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed
Event2010 International Thermal Spray Conference - Singapore, Singapore
Duration: 3 May 20105 May 2010

Fingerprint

cobalt oxides
manganese oxides
Chromium
Manganese
Solid oxide fuel cells (SOFC)
Iron oxides
iron oxides
spinel
chromium
Cobalt
protective coatings
Protective coatings
Plasmas
coatings
Coatings
Oxides
Evaporation
Chromium Compounds
chromium compounds
Chromium compounds

Keywords

  • interconnect
  • Mn-Co spinel
  • plasma spraying
  • SOFC
  • ProperPart

Cite this

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title = "The structure and properties of plasma sprayed iron oxide doped manganese cobalt oxide spinel coatings for SOFC metallic interconnectors",
abstract = "Manganese cobalt oxide spinel doped with Fe2O3 was studied as a protective coating on ferritic stainless steel interconnects. Chromium alloying causes problems at high operation temperatures in such oxidizing conditions where chromium compounds evaporate and poison the cathode active area, causing the degradation of the solid oxide fuel cell. In order to prevent chromium evaporation, these interconnectors need a protective coating to block the chromium evaporation and to maintain an adequate electrical conductivity. Thermal spraying is regarded as a promising way to produce dense and protective layers. In the present work, the ceramic Mn-Co-Fe oxide spinel coatings were produced by using the atmospheric plasma spray process. Coatings with low thickness and low amount of porosity were produced by optimizing deposition conditions. The original spinel structure decomposed because of the fast transformation of solid-liquid-solid states but was partially restored by using post-annealing treatment.",
keywords = "interconnect, Mn-Co spinel, plasma spraying, SOFC, ProperPart",
author = "J. Puranen and Juha Lagerbom and L. Hyv{\"a}rinen and M. Kylm{\"a}lahti and Olli Himanen and Mikko Pihlatie and Jari Kiviaho and P. Vuoristo",
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The structure and properties of plasma sprayed iron oxide doped manganese cobalt oxide spinel coatings for SOFC metallic interconnectors. / Puranen, J. (Corresponding Author); Lagerbom, Juha; Hyvärinen, L.; Kylmälahti, M.; Himanen, Olli; Pihlatie, Mikko; Kiviaho, Jari; Vuoristo, P.

In: Journal of Thermal Spray Technology, Vol. 20, No. 1-2, 2011, p. 154-159.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The structure and properties of plasma sprayed iron oxide doped manganese cobalt oxide spinel coatings for SOFC metallic interconnectors

AU - Puranen, J.

AU - Lagerbom, Juha

AU - Hyvärinen, L.

AU - Kylmälahti, M.

AU - Himanen, Olli

AU - Pihlatie, Mikko

AU - Kiviaho, Jari

AU - Vuoristo, P.

N1 - Project code: 41902

PY - 2011

Y1 - 2011

N2 - Manganese cobalt oxide spinel doped with Fe2O3 was studied as a protective coating on ferritic stainless steel interconnects. Chromium alloying causes problems at high operation temperatures in such oxidizing conditions where chromium compounds evaporate and poison the cathode active area, causing the degradation of the solid oxide fuel cell. In order to prevent chromium evaporation, these interconnectors need a protective coating to block the chromium evaporation and to maintain an adequate electrical conductivity. Thermal spraying is regarded as a promising way to produce dense and protective layers. In the present work, the ceramic Mn-Co-Fe oxide spinel coatings were produced by using the atmospheric plasma spray process. Coatings with low thickness and low amount of porosity were produced by optimizing deposition conditions. The original spinel structure decomposed because of the fast transformation of solid-liquid-solid states but was partially restored by using post-annealing treatment.

AB - Manganese cobalt oxide spinel doped with Fe2O3 was studied as a protective coating on ferritic stainless steel interconnects. Chromium alloying causes problems at high operation temperatures in such oxidizing conditions where chromium compounds evaporate and poison the cathode active area, causing the degradation of the solid oxide fuel cell. In order to prevent chromium evaporation, these interconnectors need a protective coating to block the chromium evaporation and to maintain an adequate electrical conductivity. Thermal spraying is regarded as a promising way to produce dense and protective layers. In the present work, the ceramic Mn-Co-Fe oxide spinel coatings were produced by using the atmospheric plasma spray process. Coatings with low thickness and low amount of porosity were produced by optimizing deposition conditions. The original spinel structure decomposed because of the fast transformation of solid-liquid-solid states but was partially restored by using post-annealing treatment.

KW - interconnect

KW - Mn-Co spinel

KW - plasma spraying

KW - SOFC

KW - ProperPart

U2 - 10.1007/s11666-010-9598-5

DO - 10.1007/s11666-010-9598-5

M3 - Article

VL - 20

SP - 154

EP - 159

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

SN - 1059-9630

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ER -