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Preparation of La1−zSrzCo1−yFeyO3−x thin films, membranes, and coatings on dense and porous substrates

Published online by Cambridge University Press:  03 March 2011

Meilin Liu  and
Dongsheng Wang
Meilin Liu
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
Dongsheng Wang
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245
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Abstract

A modified Pechini process has been successfully developed for preparation of thin films of La1−zSrzCo1−yFeyO3−x (LSCF) on both dense and porous substrates. Results indicatc that the most important processing parameter is the ratio of the polymerization/complexation agent to metal ions. Ceramic films derived from solutions with a relatively low ratio of citric acid to metal ions are usually cracked, while films derived from solutions with a relatively high ratio are crack-free and uniform. The use of ethylenediamine as an additional chelating agent further improves film quality, especially the adhesion and uniformity of the films. A single coating of solution typically yields a ceramic film of thickness about 0.4 μm, and thicker films can be prepared by application of successive coatings. For deposition of thin-film membranes on a porous substrate, however, it is necessary to modify the surface of the porous substrate in order to prevent solution from infiltrating into the pores due to capillary force, and to prevent oxide films from cracking due to surface roughness. The application of an intermediate polymer film to the surfaces of porous substrates has effectively overcome the problems and has resulted in uniform, nonporous membranes of LSCF on porous substrates. Successful deposition of thin-film ceramic membranes on porous substrates is important to fabrication of various ionic and micro-ionic devices based on ceramic thin films.

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Articles
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Journal of Materials Research , Volume 10 , Issue 12 , December 1995 , pp. 3210 - 3221
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1Isenberg, A. O., Solid State Ionics 31, 314 (1981).Google Scholar
2Weisenbach, L., Davis, T. L., and Zelinski, B. J. J., in Better Ceramics Through Chemistry IV, edited by Zelinski, B. J. J., Brinker, C. J., Clark, D. E., and Ulrich, D. R. (Mater. Res. Soc. Symp. Proc. 180, Pittsburgh, PA, 1990), pp. 377–382.Google Scholar
3(a) Hirano, S-I., Yogo, T., Kikuta, K., Isobe, Y., and Ono, S., J. Mater. Sci. 28, 4188–4192 (1993); (b) Hirano, S-I., Yogo, T., and Kikuta, K., in Better Ceramics Through Chemistry V, edited by Hampden-Smith, M. J., Klemperer, W. G., and Brinker, C. J. (Mater. Res. Soc. Symp. Proc. 271, Pittsburgh, PA, 1992), pp. 331–338.CrossRefGoogle Scholar
4Tohge, N., Tatsumisago, M., and Minami, T., J. Non-Cryst. Solids, 121, 443–447 (1990).CrossRefGoogle Scholar
5Di Giampaolo Conde, A. R., Puerta, M., Ruiz, H., and Lira Oliveres, J., J. Non-Cryst. Solids 147 & 148, 467–473 (1992).CrossRefGoogle Scholar
6Brinker, C. J. and Scherer, G. W., Sol-Gel Science (Academic Press, New York, 1990).Google Scholar
7Pechini, M. P., U. S. Patent 3 330697 (1967).Google Scholar
8Anderson, H. U., Pennell, M. J., and Guha, J. P., Adv. Ceram. 21, 91–98 (1987).Google Scholar
9Anterton, D. J. and Sale, F. R., Powder Metallurgy 1, 14 (1979).CrossRefGoogle Scholar
10Kumar, S. and Messing, G. L., in Better Ceramics Through Chemistry V, edited by Hampden-Smith, M. J., Klemperer, W. G., and Brinker, C. J. (Mater. Res. Soc. Symp. Proc. 271, Pittsburgh, PA, 1992), p. 95.Google Scholar
11Chen, C. C., Nasrallah, M. M., and Anderson, H. U., J. Electrochem. Soc. 140, 3555 (1993).CrossRefGoogle Scholar
12Kueper, T. W., Visco, S. J., and De Jonghe, L. C., Solid State Ionics 52, 251 (1992).CrossRefGoogle Scholar
13Liu, M. and Wang, D. S., GRI Annual Report (January–December 1993), GRI-94/0141, GRI Contract No. 5902-260-2487 (April 1994).Google Scholar
14Liu, M. and Wang, D. S., U. S. Patent Disclosure (1994).Google Scholar
15Anderson, H. U. and Nasrallah, M. M., GRI Annual Report (September 1990 to August 1991), GRI Contract No. 5090260-2069 (1991).Google Scholar
16Liu, M. and Khandkar, A., Solid State Ionics 52, 3–13 (1992).Google Scholar
17Lessing, P. A., Ceram. Bull. 68, 1002–1007 (1989).Google Scholar
18Courty, P., Ajot, H., Marcilly, C., and Delmon, B., Powder Technol. 7, 21 (1973).CrossRefGoogle Scholar