LOCALISED DISSOLUTION KINETICS FROM FAST IN-SITU RADIOGRAPHY OF PROPAGATING PITS IN STAINLESS STEEL AND IMPLICATIONS FOR MODELING PITTING CORROSION OVER LONG TIME-SCALES

被引：21

作者：

Laycock, N. J. ^{[1
]}

Krouse, D. P. ^{[2
]}

Ghahari, S. M. ^{[3
]}

Davenport, A. J. ^{[3
]}

Rayment, T. ^{[3
,4
]}

Padovani, C. ^{[5
]}

机构：

[1] Quest Integr Grp, POB 38-096, Wellington, New Zealand

[2] Ind Res Ltd, Wellington, New Zealand

[3] Univ Birmingham, Coll Engn & Phys Sci, Birmingham, W Midlands, England

[4] Diamond Light Source Ltd, Didcot, Oxon, England

[5] Nucl Decommissioning Author, Radioact Waste Management Directorate, Moor Row, England

来源：

CRITICAL FACTORS IN LOCALIZED CORROSION 7 | 2012年 / 41卷 / 25期

基金：

英国工程与自然科学研究理事会;

关键词：

FE-CR ALLOYS; REPASSIVATION KINETICS; CHLORIDE CONCENTRATION; SALT FILMS; TEMPERATURE; GROWTH; STABILITY; LAYERS; FOILS;

D O I：

10.1149/1.3697573

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In-situ synchrotron radiography has been used to observe propagating 2D pits in a thin foil of 304 stainless steel sandwiched between glass slides. Key kinetic parameters have been extracted from these radiographs such that they can be used as input parameters for numerical simulations of pitting corrosion. Simulation results are presented for pits growing under potentiostatic control, with a focus on propagation stability in the concentrated (> 1M) chloride solutions that cause atmospheric pitting corrosion of 304 stainless steel.

引用

页码：3 / 16

页数：14

共 33 条

[1] Calculations of the cathodic current delivery capacity and stability of crevice corrosion under atmospheric environments [J].

Chen, Z. Y. ;

Cui, F. ;

Kelly, R. G. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (07) :C360-C368

[2] Computational Modeling of Bounding Conditions for Pit Size on Stainless Steel in Atmospheric Environments [J].

Chen, Z. Y. ;

Kelly, R. G. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2010, 157 (02) :C69-C78

[3] Explanation of the effect of high chloride concentration on the critical pitting temperature of stainless steel [J].

Ernst, P. ;

Newman, R. C. .

CORROSION SCIENCE, 2007, 49 (09) :3705-3715

[4] Pit growth studies in stainless steel foils. I. Introduction and pit growth kinetics [J].

Ernst, P ;

Newman, RC .

CORROSION SCIENCE, 2002, 44 (05) :927-941

[5] Pit growth studies in stainless steel foils. II. Effect of temperature, chloride concentration and sulphate addition [J].

Ernst, P ;

Newman, RC .

CORROSION SCIENCE, 2002, 44 (05) :943-954

[6] Potential control under thin aqueous layers using a Kelvin Probe [J].

Frankel, G. S. ;

Stratmann, M. ;

Rohwerder, M. ;

Michalik, A. ;

Maier, B. ;

Dora, J. ;

Wicinski, M. .

CORROSION SCIENCE, 2007, 49 (04) :2021-2036

[7] THE GROWTH OF 2-D PITS IN THIN-FILM ALUMINUM [J].

FRANKEL, GS .

CORROSION SCIENCE, 1990, 30 (12) :1203-1218

[8] METASTABLE PITTING OF STAINLESS-STEEL [J].

FRANKEL, GS ;

STOCKERT, L ;

HUNKELER, F ;

BOEHNI, H .

CORROSION, 1987, 43 (07) :429-436

[9] TRANSPORT PROCESSES AND MECHANISM OF PITTING OF METALS [J].

GALVELE, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1976, 123 (04) :464-474

[10] MASS-TRANSFER AND ELECTROCHEMICAL KINETIC INTERACTIONS IN LOCALIZED PITTING CORROSION [J].

GAUDET, GT ;

MO, WT ;

HATTON, TA ;

TESTER, JW ;

TILLY, J ;

ISAACS, HS ;

NEWMAN, RC .

AICHE JOURNAL, 1986, 32 (06) :949-958

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