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Electrochemical Behaviour of Lamellar Interfaces in CoO - ZrO2(CaO) Aligned Eutectic Structures Submitted to Chemical Reduction

Published online by Cambridge University Press:  28 February 2011

B. Bonvalot-Dubois ,
G. Dhalenne  and
A. Revcolevschi
B. Bonvalot-Dubois
Affiliation:
Laboratoire de chimie des Solides, U.A. C.N.R.S. N° 446 Batiment 414, Universit6 Paris-Sud, 91405 Orsay Cedex -, France
G. Dhalenne
Affiliation:
Laboratoire de chimie des Solides, U.A. C.N.R.S. N° 446 Batiment 414, Universit6 Paris-Sud, 91405 Orsay Cedex -, France
A. Revcolevschi
Affiliation:
Laboratoire de chimie des Solides, U.A. C.N.R.S. N° 446 Batiment 414, Universit6 Paris-Sud, 91405 Orsay Cedex -, France
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Abstract

In a previous study we have examined the reduction of nickel oxide into nickel in NiO-ZrO2(CaO) aligned lamellar eutectic structures [1-2]. From the data which were obtained, we developed a model accounting for the fast reduction of nickel oxide; in particular it was shown that reduction takes place through the action of an electrochemical local cell, involving fast transport of oxygen to the sample surface through the cubic zirconia phase [2].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 138: Symposium Q – Characterization of the Structure and Chemistry of Defects in Materials , 1988 , 587
Copyright
Copyright © Materials Research Society 1989

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References

1) Revcolevschi, R. and Dhalenne, G., Nature, 316, 1985, 335.CrossRefGoogle Scholar
2. Bonvalot-Dubois, B., Dhalenne, G., Berthon, J., Revcolevschi, A. and Rapp, R.A., J. Am. Ceran. Soc., 71, 1988, 296.Google Scholar
3. Revcolevschi, A., Rev. lnt. Hautes Temp. Réfract., 7, 1970, 73.Google Scholar
4. Dhalenne, G. and Revcolevschi, A., J. Crystal Growth, 69, 1984, 616.Google Scholar
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6. Bonvalot-Dubois, B., Ph.D, thesis, 1988, Orsay.Google Scholar