Experimental study of NiO electrical conductivity changes under low oxygen pressures - Mines Saint-Étienne Access content directly
Journal Articles Oxidation of Metals Year : 1978

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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Dates and versions

emse-00433767 , version 1 (20-11-2009)

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  • HAL Id : emse-00433767 , version 1

Cite

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