Diffusivity of point defects in the passive film on Fe

被引：82

作者：

Ahn, S ^{[1
]}

Kwon, H ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2005年 / 579卷 / 02期

关键词：

diffusivity; point defects; passive film; Fe; Mott-Schottky plot;

D O I：

10.1016/j.jelechem.2005.03.003

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Diffusivity of point defects (DO) in the passive film formed on Fe in deaerated pH 8.5 buffer solution at ambient temperature was estimated by the Mott-Schottky analysis based on the Point Defect Model and surface charge approach assuming that donors are oxygen vacancies and/or iron interstitials. From the exponential decay of the concentration of donors with film formation potential, Do was calculated to be 1.69 x 10(-20) cm(2) s(-1). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：311 / 319

页数：9

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