Atomic structure of the passive oxide film formed on iron

被引：168

作者：

Toney, MF ^{[1
]}

Davenport, AJ ^{[1
]}

Oblonsky, LJ ^{[1
]}

Ryan, MP ^{[1
]}

Vitus, CM ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB, DEPT APPL SCI, UPTON, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.79.4282

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used x-ray scattering to measure the structure of the passive oxide film formed at high anodic potentials on Fe(110) and Fe(001). The crystalline film has a small crystallite size (approximate to 50 Angstrom) and is oriented with the substrate. The film structure is based on Fe3O4, but with cation vacancies on octahedral and tetrahedral sites (80% and 66% occupancies, respectively) and with cations occupying octahedral interstitial sites (12% occupancy). These results resolve the long-standing controversy surrounding the film structure and provide a basis for understanding and modeling film properties important for corrosion resistance.

引用

页码：4282 / 4285

页数：4

共 21 条

[1]

BUECHLER BM, 1996, ELECTROCHEM SOC P, V96, P172

[2] HIGH-RESOLUTION IN-SITU XANES INVESTIGATION OF THE NATURE OF THE PASSIVE FILM ON IRON IN A PH 8.4 BORATE BUFFER [J].

DAVENPORT, AJ ;

SANSONE, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (03) :725-730

[3] POINT-DEFECTS AND TRANSPORT-PROPERTIES OF BINARY AND TERNARY OXIDES [J].

DIECKMANN, R .

SOLID STATE IONICS, 1984, 12 (MAR) :1-22

[4] A MOSSBAUER-SPECTROSCOPY STUDY OF THE POTENTIAL DEPENDENCE OF PASSIVATED IRON FILMS [J].

ELDRIDGE, J ;

HOFFMAN, RW .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1989, 136 (04) :955-961

[5] ELECTRON DIFFRACTION STUDIES OF ACTIVE PASSIVE AND TRANSPASSIVE OXIDE FILMS FORMED ON IRON [J].

FOLEY, CL ;

KRUGER, J ;

BECHTOLDT, CJ .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1967, 114 (10) :994-+

[6] INSITU VIBRATIONAL-SPECTRA OF THE PASSIVE FILM ON IRON IN BUFFERED BORATE SOLUTION [J].

GUI, J ;

DEVINE, TM .

CORROSION SCIENCE, 1991, 32 (10) :1105-1124

[7]

Hoffman R. W., 1983, Passivity of Metals and Semiconductors. Proceedings of the 5th International Symposium, P147

[8] INSITU STRUCTURAL STUDIES OF THE PASSIVE FILM ON IRON AND IRON CHROMIUM-ALLOYS USING X-RAY ABSORPTION-SPECTROSCOPY [J].

KERKAR, M ;

ROBINSON, J ;

FORTY, AJ .

FARADAY DISCUSSIONS, 1990, 89 :31-40

[9] ELECTRON-DIFFRACTION STUDY OF THE PASSIVE FILM ON IRON [J].

KURODA, K ;

CAHAN, BD ;

NAZRI, G ;

YEAGER, E ;

MITCHELL, TE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1982, 129 (10) :2163-2169

[10] STRUCTURE OF PASSIVE FILMS ON IRON USING A NEW SURFACE-EXAFS TECHNIQUE [J].

LONG, GG ;

KRUGER, J ;

BLACK, DR ;

KURIYAMA, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1983, 150 (1-2) :603-610

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