Electrochemical reduction of ferric corrosion products and evaluation of galvanic coupling with iron

被引：86

作者：

Lair, V. ^{[1
]}

Antony, H. ^{[1
]}

Legrand, L. ^{[1
]}

Chausse, A. ^{[1
]}

机构：

[1] Univ Evry Val Essonne, CNRS, UMR 8587, Lab Anal & Environm,CEA, F-91025 Evry, France

来源：

CORROSION SCIENCE | 2006年 / 48卷 / 08期

关键词：

ferric product; green rust; electrochemical reduction; galvanic coupling;

D O I：

10.1016/j.corsci.2005.06.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferric product powders were synthesised. The purity of each compound was controlled by FTIR and XRD analysis; the BET surface area and electrical conductivity were also reported. The galvanostatic electrochemical reduction of graphite/ferric product composite electrodes was investigated at 25 degrees C in mildly alkaline pH-buffered solutions containing chloride, sulphate or bicarbonate anions. The efficiency of the reduction process (Fe-III-to-Fe-II reaction) was quantified by reporting the potential value obtained at half the transition time, E-tau/2, on the E-t transient, as a function of Q(tau), the coulombic charge obtained at the end of the reduction. The possibilities for a galvanic coupling to occur have been discussed based on the reduction efficiency plots and corrosion potential values of iron in the various media. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2050 / 2063

页数：14

共 17 条

[1] Conversion electron Mossbauer spectroscopy and X-ray diffraction studies of the formation of carbonate-containing green rust one by corrosion metallic iron in NaHCO3 and (NaHCO3+NaC1) solutions [J].

Abdelmoula, M ;

Refait, P ;

Drissi, SH ;

Mihe, JP ;

Genin, JMR .

CORROSION SCIENCE, 1996, 38 (04) :623-633

[2] The effect of water content on the magnetic and structural properties of goethite [J].

Betancur, JD ;

Barrero, CA ;

Greneche, JM ;

Goya, GF .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 369 (1-2) :247-251

[3] Akaganeite-type β-FeO(OH) nanocrystals:: preparation and characterization [J].

Deliyanni, EA ;

Bakoyannakis, DN ;

Zouboulis, AI ;

Matis, KA ;

Nalbandian, L .

MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 42 (01) :49-57

[4] Advances in understanding atmospheric corrosion of iron. I. Rust characterisation of ancient ferrous artefacts exposed to indoor atmospheric corrosion [J].

Dillmann, P ;

Mazaudier, F ;

Hoerle, S .

CORROSION SCIENCE, 2004, 46 (06) :1401-1429

[5] Dissolution kinetics of schwertmannite and ferrihydrite in oxidized mine samples and their detection by differential X-ray diffraction (DXRD) [J].

Dold, B .

APPLIED GEOCHEMISTRY, 2003, 18 (10) :1531-1540

[6]

HICKLING A, 1975, ELECTROCHIM ACTA, V20, P63, DOI 10.1016/0013-4686(75)85046-8

[7] In situ Fourier-transform infrared spectroscopy studies of inorganic ions adsorption on metal oxides and hydroxides [J].

Lefèvre, G .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2004, 107 (2-3) :109-123

[8] The oxidation of carbonate green rust into ferric phases:: solid-state reaction or transformation via solution [J].

Legrand, L ;

Mazerolles, L ;

Chaussé, A .

GEOCHIMICA ET COSMOCHIMICA ACTA, 2004, 68 (17) :3497-3507

[9] Electroanalytical and kinetic investigations on the carbonate green rust-Fe(III) redox system [J].

Legrand, L ;

Maksoub, R ;

Sagon, G ;

Lecomte, S ;

Dallas, JP ;

Chaussé, A .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (02) :B45-B51

[10] FORMATION AND REDUCTION OF THE PASSIVE FILM ON IRON IN PHOSPHATE-BORATE BUFFER SOLUTION [J].

OGURA, K ;

MAJIMA, T .

ELECTROCHIMICA ACTA, 1978, 23 (12) :1361-1365

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