NDLI: Electroconduction in the Zr|ZrO$

Content Provider	Springer Nature Link
Author	Nikitin, K. N. Atanasyants, A. G. Emel’yav, A. A.
Copyright Year	2006
Abstract	Electroconduction of anodic oxide films on zirconium in 0.1 M Na$_{2}$SO$_{4}$ is studied. The films are formed in a galvanostatic regime on single-crystal and polycrystalline iodide-refined zirconium, as well as on electrodes manufactured from a rod obtained by hot extrusion of zirconium iodide melted in an arc furnace and from a plate of iodide-refined zirconium of the I-100 brand. Electrophysical properties of the films are compared on the basis of a model of Frenkel defects, which constitute a system of noninteracting donor centers in the oxide, and a model that describes the formation of a space charge from the donor centers in the oxide (exponential distribution of traps over the films’ bulk). It is shown that experimental current-voltage curves cannot be described by a single model throughout the entire voltage range. At low voltages (<12 V), the Frenkel model is more preferable. In terms of this model, the experimental results can be linearized in the lnI vs. U $^{1/2}$ coordinates. At higher voltages, it is more convenient to describe experimental data within the space-charge model in the I vs. U$^{2}$ or ln(I/U) vs. U coordinates. It is discovered that the technique, which is used for preliminary metallurgical treatment, and the structure of the substrate metal affect parameters of electron conduction in anodic oxide films.
Starting Page	398
Ending Page	402
Page Count	5
File Format	PDF
ISSN	10231935
Journal	Russian Journal of Electrochemistry
Volume Number	42
Issue Number	4
e-ISSN	16083342
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2006-01-01
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	zirconium electroconduction anodic oxide film Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

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