Abstract
Thermodynamic analysis predicts and experiments confirm that La1−x Sr x CrO3 powder, used to manufacture interconnect components in solid oxide fuel cells (SOFC), may be prepared via SHS under moderate conditions. The oxidation of Cr is the main source of heat generation, which maintains a stable reaction front. The combustion temperature, front propagating velocity and product particle size may be modified by replacing part of the metallic Cr in the reaction mixture by its oxide. Decomposition of either CrO3, SrO2, or NaClO4 provides the oxygen needed for the Cr oxidation. The predicted and observed combustion temperatures are in reasonable agreement. However, experiments indicate that extensive dilution may lead to extinction under conditions for which the thermodynamic analysis predicts that SHS is feasible.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
J. Leo, M. J. Blomen, and M. N. Mugerwa, Solid Oxide Fuel Cells (Plenum Press, New York, 1993).
S. C. Singhal, in Proc. 2nd Int. Symp. Solid Oxide Fuel Cells: Solid Oxide Fuel Cell Dev. Westinghouse, F. Grosz, P. Zegers, S. C. Singhal, and O. Yamamsoto, eds. (Luxembourg, 1991), pp. 25–39.
H. U. Anderson, in Proc. Crystal. Ceram. Fabricat. Prop. Control LaCrO 3 Based Oxides, H. Palmour, R. F. Davis, and T. M. Hare, eds. (Plenum Press, New York, 1978), pp. 469–477.
L.-W. Tai and P. A. Lessing, J. Mater. Res. 7, 511 (1992).
Y. Kadogawa and N. Kitayama, Chem. Express 1(3), 145 (1986).
R. G. Chandran and K. C. Patil, Mater. Lett. 12, 437 (1992).
L. A. Chick, L. R. Pederson, G. D. Maupin, et al., Mater. Lett. 10, 6 (1990).
P. B. Avakyan, M. D. Nersesyan, and A. G. Merzhanov, Am. Ceram. Soc. Bull. 75(2), 50 (1996).
J.-P. Lebrat and A. Varma, Physica C 184, 220 (1991).
S-C. Lin, D. X. Li, R. Semiat, J. T. Richardson, and D. Luss, Physica C 218, 130 (1993).
A. G. Merzhanov, in Combustion and Plasma Synthesis of High-Temperature Materials, Self-Propagating High-Temperature Synthesis, Twenty Years of Research and Findings, Z. A. Munir and J. B. Holt, eds. (VCH, New York, 1990), pp. 1–53.
A. A. Shiryaev, Int. J. SHS 4(4), 351 (1995).
A. G. Merzhanov, M. M. Kitain, U. I. Goldshlegev, and A. S. Shteinberg, Dokl. Akad. Nauk SSSP 237(2), 391 (1977).
JANAF, Thermodynamical Tables, 3rd ed. Vol. 14 (1985).
V. L. Glushko, The Thermodynamic Properties of Individual Substances (Nauka, Moscow, 1979).
Y. I. Yukhvid, S. V. Maklakov, P. V. Zhirkov, et al., J. Mater. Sci. 32, 1915 (1997).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Shiryaev, A.A., Nersesyan, M.D., Ming, Q. et al. Thermodynamic Feasibility of SHS of SOFC Materials. Journal of Materials Synthesis and Processing 7, 83–90 (1999). https://doi.org/10.1023/A:1021813629286
Issue Date:
DOI: https://doi.org/10.1023/A:1021813629286