Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 17284-17294 |
| Number of pages | 10 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 39 |
| Issue number | 30 |
| DOIs | |
| Publication status | Published - 2014 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- solid oxide fuel cells
- SOFC interconnect
- atmospheric plasma spraying
- spinel coatings
- protective coatings
- area specific resistance
- ProperPart
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Post-mortem evaluation of oxidized atmospheric plasma sprayed Mn-Co-Fe oxide spinel coatings on SOFC interconnectors. / Puranen, J. (Corresponding Author); Pihlatie, Mikko; Lagerbom, Juha; Bolelli, G.; Laakso, J.; Hyvärinen, L.; Kylmälahti, M.; Himanen, Olli; Kiviaho, Jari; Lusvarghi, L.; Vuoristo, P.
In: International Journal of Hydrogen Energy, Vol. 39, No. 30, 2014, p. 17284-17294.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Post-mortem evaluation of oxidized atmospheric plasma sprayed Mn-Co-Fe oxide spinel coatings on SOFC interconnectors
AU - Puranen, J.
AU - Pihlatie, Mikko
AU - Lagerbom, Juha
AU - Bolelli, G.
AU - Laakso, J.
AU - Hyvärinen, L.
AU - Kylmälahti, M.
AU - Himanen, Olli
AU - Kiviaho, Jari
AU - Lusvarghi, L.
AU - Vuoristo, P.
PY - 2014
Y1 - 2014
N2 - Interconnects employed in solid oxide fuel cells require electrically conductive protective coatings such as those based on manganese cobalt oxide spinels in order to prevent evaporation of volatile Cr(VI)-compounds and to minimize high temperature corrosion. MnCo2-xFexO4 based (where x = 0.1 and 0.3) oxide spinel protective coatings were manufactured by the atmospheric plasma spraying process on Crofer 22 APU substrates. The coated substrates were oxidized at 700 °C in air for 1000 h and post-mortem analyses were conducted to study the performance of the thermal sprayed coatings. During the high temperature oxidation, a four-point on-line measurement technique was used for area specific resistance studies. The MnCo1.7Fe0.3O4 coating was tested together with the La0.85Sr0.15Mn1.1O3-spacer. The atmospheric plasma sprayed MnCo2-xFexO4 showed excellent Cr-barrier properties and decreased oxidation of the substrate. In addition, resistance as low as 9.20 m{\Omega} cm2 values was obtained after the 1000 h oxidation cycle. The MnCo1.9Fe0.1O4 coating manufactured by the atmospheric plasma spraying process is a promising candidate for SOFC interconnect applications.
AB - Interconnects employed in solid oxide fuel cells require electrically conductive protective coatings such as those based on manganese cobalt oxide spinels in order to prevent evaporation of volatile Cr(VI)-compounds and to minimize high temperature corrosion. MnCo2-xFexO4 based (where x = 0.1 and 0.3) oxide spinel protective coatings were manufactured by the atmospheric plasma spraying process on Crofer 22 APU substrates. The coated substrates were oxidized at 700 °C in air for 1000 h and post-mortem analyses were conducted to study the performance of the thermal sprayed coatings. During the high temperature oxidation, a four-point on-line measurement technique was used for area specific resistance studies. The MnCo1.7Fe0.3O4 coating was tested together with the La0.85Sr0.15Mn1.1O3-spacer. The atmospheric plasma sprayed MnCo2-xFexO4 showed excellent Cr-barrier properties and decreased oxidation of the substrate. In addition, resistance as low as 9.20 m{\Omega} cm2 values was obtained after the 1000 h oxidation cycle. The MnCo1.9Fe0.1O4 coating manufactured by the atmospheric plasma spraying process is a promising candidate for SOFC interconnect applications.
KW - solid oxide fuel cells
KW - SOFC interconnect
KW - atmospheric plasma spraying
KW - spinel coatings
KW - protective coatings
KW - area specific resistance
KW - ProperPart
U2 - 10.1016/j.ijhydene.2014.08.105
DO - 10.1016/j.ijhydene.2014.08.105
M3 - Article
VL - 39
SP - 17284
EP - 17294
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 30
ER -