Abstract
Conductivity and oxidation behavior of Fe-16Cr alloy were investigated under long-term stability operation at 750 °C and thermal cycles from room temperature to 750 °C. The results showed that the area specific resistance (ASR) of Fe-16Cr alloy increased over time and reached about 56.29 mΩ cm2 after 40,000 h of long-term stability operation at 750 °C by theoretical calculation. The ASR of Fe-16Cr remained about 11 mΩ cm2 after 52 thermal cycles from room temperature to 750 °C. The analysis of structure showed that the oxidized phase on the surface of Fe-16Cr was mainly composed of Cr2O3 and FeCr2O4 spinel phase under long-term stability operation at 750 °C. While the Cr2O3 phase was mainly observed on the surface of Fe-16Cr alloy after 52 thermal cycles, the oxidation rates of Fe-16Cr alloy were 0.0142 μm h−1 and 0.06 μm cycle−1 under long-term stability operation and under thermal cycle, respectively. The property of Fe-16Cr alloy with 2.6 mm thickness met the lifespan requirement of interconnect for solid oxide fuel cell (SOFC) stacks. The Cr element all diffused onto oxidation surface, indicating that it was necessary to spray a coating on the surface to avoid poisoning cell cathode of SOFCs. Two 2-cell stacks were assembled and tested to verify the properties of Fe-16Cr alloy as SOFC interconnect under long-term stability operation and thermal cycle condition.
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References
H. Kurokaw, K. Kawamur, T. Maruyam, Solid State Ionics 168, 13 (2004)
J.W. Wu, X.B. Liu, J. Mater. Sci. Technol. 26, 293 (2010)
H. Ullmann, N. Trofimenko, F. Tietz, D. Stver, A. Ah-mad-Khanlou, Solid State Ionics 138, 79 (2000)
H. Yokokawa, N. Sakai, T. Horita, K. Yamaji, M.E. Brito, H. Kishimoto, J. Alloys Compd. 452, 41 (2008)
K. Huang, P.Y. Hou, J.B. Goodenough, Mater. Res. Bull. 36, 81 (2001)
G. Cabouro, G. Caboche, S. Chevalier, P. Piccardo, J. Power Sources 156, 39 (2006)
P. Kofstad, R. Bredesen, Solid State Ionics 52, 69 (1992)
T. Horita, Y.P. Xiong, K. Yamaji, N. Sakai, H. Yokokawa, J. Power Sources 118, 35 (2003)
T. Ueda, H. Ohno, A. Toji, Switzerland 1, 281 (2002)
J.P. Albellan, F. Tietz, V. Shemet, A. Gil, Switzerland 1, 248 (2002)
T. Horita, Y.P. Xiong, K. Yamaji, N. Sakai, H. Yokokawa, J. Electrochem. Soc. 150, 243 (2003)
J. Pu, J. Li, B. Hua, G.Y. Xie, J. Power Sources 158, 354 (2006)
W.A. Meulenberg, S. Uhlenbruek, E. Wssel, J. Mater. Sci. 38, 507 (2003)
P. Piccardo, P. Gannon, S. Chevalier, M. Viviani, A. Barbucci, G. Caboche, R. Amendola, S. Fontana, Surf. Coat. Technol. 202, 1221 (2007)
M.F. Han, S.P. Peng, Z.L. Wang, Z.B. Yang, X. Chen, J. Power Sources 164, 278 (2007)
X.H. Deng, P. Wei, M. Bateni, A. Petric, J. Power Sources 160, 1225 (2006)
Y. Zhang, P. Guo, Y. Shao, Y.B. Lai, J.Q. Zhang, J. Alloys Compd. 680, 685 (2016)
S. Fontana, R. Amendola, S. Chevalier, P. Piccardo, G. Caboche, M. Viviani, R. Molins, M. Sennour, J. Power Sources 171, 652 (2007)
W.B. Guan, H.J. Zhai, L. Jin, T.S. Li, W.G. Wang, Fuel Cells 1, 445 (2011)
W.B. Guan, L. Jin, X. Ma, W.G. Wang, Fuel Cells 12, 1085 (2012)
W.B. Guan, G.L. Wang, X.D. Zhou, J. Power Source 315, 169 (2017)
W.Z. Zhu, S.C. Devi, Mater. Sci. Eng. 348, 227 (2003)
K. Huang, P.Y. Hou, J.B. Goodenough, Solid State Ionics 129, 237 (2000)
H. Kurokawa, K. Kawamura, T. Maruyama, Solid State Ionics 168, 413 (2004)
S.W. Sofie, P. Gannon, V. Gorokhovsky, J. Power Sources 191, 465 (2009)
Z. Lu, J.H. Zhu, Electrochem. Solid-State Lett. 10, 179 (2007)
W.A. Meulenberg, O. Teller, U. Flesch, H.P. Buchkremer, D. Stover, J. Mater. Sci. 36, 3189 (2001)
S.P. Jiang, S. Zhang, Y.D. Zhen, J. Mater. Res. 20, 747 (2005)
Y. Niu, J.X. Song, F. Gesmundo, G. Farne, Oxid. Met. 55, 291 (2001)
H.W. Abernathy, E. Koep, C. Compson, Z. Cheng, M. Liu, J. Phys. Chem. C 112, 13299 (2008)
C.J. Fu, K.N. Sun, X.B. Chen, D.R. Zhou, Electrochim. Acta 54, 7305 (2009)
Acknowledgements
This work was financially supported by the Key R&D Program from the Ministry of Science and Technology of China (No. 2018YFB1502600), the Ningbo Major Special Projects of the Plan “Science and Technology Innovation 2025 ” (No. 2019B10043), the Science and Technology Project of Zhejiang Energy Group Co., Ltd. (No. znkj-2018-008), and the Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province.
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Zhou, J., Chen, Q., Sang, J. et al. Conductivity and Oxidation Behavior of Fe-16Cr Alloy as Solid Oxide Fuel Cell Interconnect Under Long-Stability and Thermal Cycles. Acta Metall. Sin. (Engl. Lett.) 34, 668–674 (2021). https://doi.org/10.1007/s40195-020-01147-4
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DOI: https://doi.org/10.1007/s40195-020-01147-4