Abstract
| Original language | English |
|---|---|
| Title of host publication | Applied Material Research at VTT |
| Subtitle of host publication | Symposium on Applied Materials |
| Place of Publication | Espoo |
| Publisher | VTT Technical Research Centre of Finland |
| Pages | 40-49 |
| ISBN (Electronic) | 951-38-6312-3 |
| ISBN (Print) | 951-38-6311-5 |
| Publication status | Published - 2006 |
| MoE publication type | B3 Non-refereed article in conference proceedings |
| Event | Internal Symposium on Applied Materials - Espoo, Finland Duration: 8 Jun 2006 → 8 Jun 2006 |
Publication series
| Series | VTT Symposium |
|---|---|
| Number | 244 |
| ISSN | 0357-9387 |
Conference
| Conference | Internal Symposium on Applied Materials |
|---|---|
| Country | Finland |
| City | Espoo |
| Period | 8/06/06 → 8/06/06 |
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In-service degradation of interconnector materials for solid oxide fuel cells. / Mustala, Sanni; Veivo, Juha; Auerkari, Pertti; Kiviaho, Jari; Noponen, Matti.
Applied Material Research at VTT: Symposium on Applied Materials. Espoo : VTT Technical Research Centre of Finland, 2006. p. 40-49 (VTT Symposium; No. 244).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific
TY - GEN
T1 - In-service degradation of interconnector materials for solid oxide fuel cells
AU - Mustala, Sanni
AU - Veivo, Juha
AU - Auerkari, Pertti
AU - Kiviaho, Jari
AU - Noponen, Matti
PY - 2006
Y1 - 2006
N2 - The oxide growth and thermal degradation characteristics of three SOFC interconnector alloys have been investigated particularly for the cathode side conditions.The tested materials were ferritic stainless alloys including one common standard grade (alloy 430) and two alloys (Crofer 22 APU, ZMG 232) specifically designed for interconnector service.All three alloys appear to follow parabolic oxidation within the range of testing conditions (up to 500 h at 740 °C in air).A somewhat more pronounced oxidation was found in alloys ZMG 232 and Crofer 22 APU than in alloy 430.During oxidation, a consistent decrease inof iron and increase inof chromium and manganese were observed in the surface oxide.Some chromium transport was detected on the cathode side surface of the cell after 500 h at 740 °C.The results emphasise the importance of an appropriate coating for of the interconnectors, to prevent chromium poisoning on the cathode.A natural coating material would be similar or compatible with the ceramic cathode.Such a coating also has the additional advantage that simpler and cheaper steel grades could be used as the interconnector material.
AB - The oxide growth and thermal degradation characteristics of three SOFC interconnector alloys have been investigated particularly for the cathode side conditions.The tested materials were ferritic stainless alloys including one common standard grade (alloy 430) and two alloys (Crofer 22 APU, ZMG 232) specifically designed for interconnector service.All three alloys appear to follow parabolic oxidation within the range of testing conditions (up to 500 h at 740 °C in air).A somewhat more pronounced oxidation was found in alloys ZMG 232 and Crofer 22 APU than in alloy 430.During oxidation, a consistent decrease inof iron and increase inof chromium and manganese were observed in the surface oxide.Some chromium transport was detected on the cathode side surface of the cell after 500 h at 740 °C.The results emphasise the importance of an appropriate coating for of the interconnectors, to prevent chromium poisoning on the cathode.A natural coating material would be similar or compatible with the ceramic cathode.Such a coating also has the additional advantage that simpler and cheaper steel grades could be used as the interconnector material.
M3 - Conference article in proceedings
SN - 951-38-6311-5
T3 - VTT Symposium
SP - 40
EP - 49
BT - Applied Material Research at VTT
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -