STUDY OF PASSIVE FILMS FORMED ON AISI 304 STAINLESS-STEEL BY IMPEDANCE MEASUREMENTS AND PHOTOELECTROCHEMISTRY

被引：292

作者：

SIMOES, AMP

FERREIRA, MGS

RONDOT, B

BELO, MD

机构：

[1] Univ Tecn Lisboa, INST SUPER TECN, P-1096 LISBON, PORTUGAL

[2] CNRS, CTR ETUD CHIM MET, F-94407 VITRY, FRANCE

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1990年 / 137卷 / 01期

关键词：

D O I：

10.1149/1.2086444

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Mott-Schottky plots and photoelectrochemical measurements were made on films formed at different potentials on AISI 304 stainless steel in a borate/boric acid solution, pH 9.2. The results allowed the determination of the semiconductive properties and band structure of the films, which account for the existence of two kinds of films depending on the formation potential. For potentials below 0 V (SCE), the results point out for a film with an inverse spinel structure constituted by Cr-substituted magnetite with two donor levels. Above 0 V only one donor level is detected, which should be Fe2+ on tetrahedral sites. © 1990, The Electrochemical Society, Inc. All rights reserved.

引用

页码：82 / 87

页数：6

共 41 条

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