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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
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6. Bonvalot-Dubois, B., Ph.D, thesis, 1988, Orsay.Google Scholar