Mn-Co spinel coatings on Crofer 22 APU by electrophoretic deposition: Up scaling, performance in SOFC stack at 850?C and compositional modifications

被引：34

作者：

Sabato, A. G. ^{[1
]}

Zanchi, E. ^{[2
]}

Molin, S. ^{[3
]}

Cempura, G. ^{[4
]}

Javed, H. ^{[5
]}

Herbrig, K. ^{[5
]}

Walter, C. ^{[5
]}

Boccaccini, A. R. ^{[6
]}

Smeacetto, F. ^{[2
]}

机构：

[1] Inst Recerca Energia Catalunya IREC, 1,2a Pl, Barcelona 08930, Spain

[2] Politecn Torino, Dept Appl Sci & Technol, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[3] Gdansk Univ Technol, Fac Elect Telecommun & Informat, Ul G Narutowicza 11-12, PL-80233 Gdansk, Poland

[4] AGH Univ Sci & Technol, Al Mickiewicza 30, PL-30059 Krakow, Poland

[5] Sunfire GmbH, Gasanstaltstr 2, D-01237 Dresden, Germany

[6] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Cauerstr 6, D-91058 Erlangen, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2021年 / 41卷 / 08期

关键词：

Coating; SOFC; Electrophoretic deposition; Spinel; Electron microscopy;

D O I：

10.1016/j.jeurceramsoc.2021.03.030

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ceramic coatings for metallic interconnects play a key role in limiting corrosion and chromium evaporation in solid oxide cells. This study presents the upscaling of the electrophoretic deposition (EPD) technique to process Mn-Co spinels on real-dimension Crofer 22 APU interconnects and the test in a SOFC stack. Area specific resistance of long-term test conducted for 5000 h at 850 ?C demonstrated that two-steps sintering has a significant influence on the coating performance; an area specific resistance degradation rate of 0.5 m? cm2 kh-1 is recorded. Stack test, operated in fuel cell mode at 850 ?C for 3000 h under application of 227 mA/cm2, including 5 thermal cycles, demonstrated the effectiveness of the electrophoretically deposited Mn-Co spinel in limiting the oxide scale growth on the Crofer 22 APU. An advanced post mortem investigation showed the effectiveness of the EPD ceramic coating, even when considering different and complex surfaces of the Crofer 22 APU.

引用

页码：4496 / 4504

页数：9

共 11 条

[11] Influence of powder composition and manufacturing method on electrical and chromium barrier properties of atmospheric plasma sprayed spinel coatings prepared from MnCo2O4 and Mn2CoO4 + Co powders on Crofer 22 APU interconnectors
Puranen, Jouni
Pihlatie, Mikko
Lagerbom, Juha
Salminen, Turkka
Laakso, Jarmo
Hyvarinen, Leo
Kylmalahti, Mikko
Himanen, Olli
Kiviaho, Jari
Vuoristo, Petri
[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2014, 39 (30) : 17246 - 17257

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