A Study of the Formation of Anodic Oxide Films on Titanium

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Abstract
The relation between current and field at the formation of anodic oxide films on titanium was studied using nonaqueous electrolyte. The results obtained are consistent with the following relationship between ion current and electrostatic field across the film: , where and are constant at a fixed temperature. From the temperature dependences of and , it was found that the rate‐determining mode at high temperature approaches the Cabrera‐Mott model, and low temperature favors the effects of space charge. The half width of potential barrier opposing the ionic flow varies from 1.2Aå to 1.6Aå with the space charge contribution.

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