Experimental study of NiO electrical conductivity changes under low oxygen pressures

Abstract : The electrical conductivity of NiO was measured at 740°C in an oxygen pressure range of 10-2-1.3 Torr. By means of continuous recording, longtime experiments were performed. The results show that for any admittance of oxygen, the electrical conductivity initially increased and then decreased to its initial value. For pressures higher than 0.1 Torr the decrease of the signal was reduced and the time required to attain the initial value sometimes reached several days. These results suggest that the electrical conductivity changes may be considered as a transitory phenomenon connected to attaining gas-solid equilibrium.
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Article dans une revue
Oxidation of Metals, Springer Verlag, 1978, 12 (2), pp.183-190
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https://hal-emse.ccsd.cnrs.fr/emse-00433767
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Soumis le : vendredi 20 novembre 2009 - 10:45:11
Dernière modification le : mercredi 29 novembre 2017 - 10:07:54

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  • HAL Id : emse-00433767, version 1

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René Lalauze, Jean Meunier. Experimental study of NiO electrical conductivity changes under low oxygen pressures. Oxidation of Metals, Springer Verlag, 1978, 12 (2), pp.183-190. 〈emse-00433767〉

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