Introduction of Cu2+ to the inside of the crevice by chelation and its effect on crevice corrosion of Type 316L stainless steel

被引：5

作者：

Aoyama, Takahito ^{[1
]}

Kato, Chiaki ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, 2-4 Shirakata,Tokai Mura,Naka Gun, Ibaraki 3191195, Japan

来源：

CORROSION SCIENCE | 2023年 / 210卷

基金：

日本学术振兴会;

关键词：

A; Stainless steel; B; Potentiostatic; C; Crevice corrosion; SOLUTION CHEMISTRY; PASSIVE FILM; ALLOY SULFUR; COPPER-ION; INITIATION; EDTA; ADSORPTION; PH; DISSOLUTION; BEHAVIOR;

D O I：

10.1016/j.corsci.2022.110850

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The chelated complex of Cu2+: [Cu(EDTA)]2-was used to introduce Cu2+ from outside to the inside of crevice. The introduced Cu2+was expected to act as an inhibitor for the crevice corrosion on stainless steels. Crevice corrosion tests confirmed the introduction of Cu2+ to the inside of the crevice via electromigration of [Cu (EDTA)]2-. Migrated [Cu(EDTA)]2-reacted with H+ and inhibited decrease in pH inside the crevice, where Cu2+ was separated from [Cu(EDTA)]2-and suppressed active dissolution of the stainless steel.

引用

页数：10

共 48 条

[1] RAPID CHELOMETRIC DETERMINATION OF CHROMATE AS CR(III)-EDTA BY REDUCTION IN PRESENCE OF EDTA [J].

AIKENS, DA ;

REILLEY, CN .

ANALYTICAL CHEMISTRY, 1962, 34 (13) :1707-&

[2] THE DETERMINATION OF PH, POTENTIAL AND CHLORIDE CONCENTRATION IN CORRODING CREVICES ON 304-STAINLESS STEEL AND 7475-ALUMINUM ALLOY [J].

ALAVI, A ;

COTTIS, RA .

CORROSION SCIENCE, 1987, 27 (05) :443-451

[3] Decrease in Pitting Corrosion Resistance of Extra-High-Purity Type 316 Stainless-Steel by Cu2+ in NaCl [J].

Aoyama, Takahito ;

Ogawa, Hiroaki ;

Kato, Chiaki ;

Ueno, Fumiyoshi .

METALS, 2021, 11 (03) :1-14

[4] NH4+ Generation: The Role of NO3- in the Crevice Corrosion Repassivation of Type 316L Stainless Steel [J].

Aoyama, Takahito ;

Sugawara, Yu ;

Muto, Izumi ;

Hara, Nobuyoshi .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2019, 166 (10) :C250-C260

[5] In situ monitoring of crevice corrosion morphology of Type 316L stainless steel and repassivation behavior induced by sulfate ions [J].

Aoyama, Takahito ;

Sugawara, Yu ;

Muto, Izumi ;

Hara, Nobuyoshi .

CORROSION SCIENCE, 2017, 127 :131-140

[6]

BLESA MA, 1984, J COLLOID INTERF SCI, V98, P295

[7] Occluded solution chemistry control and the role of alloy sulfur on the initiation of crevice corrosion in type 304ss [J].

Brossia, CS ;

Kelly, RG .

CORROSION SCIENCE, 1998, 40 (11) :1851-1871

[8] Influence of alloy sulfur content and bulk electrolyte composition on crevice corrosion initiation of austenitic stainless steel [J].

Brossia, CS ;

Kelly, RG .

CORROSION, 1998, 54 (02) :145-154

[9] The crevice corrosion of alloy 22 in the Yucca Mountain nuclear waste repository [J].

Carranza, R. M. .

JOM, 2008, 60 (01) :58-65

[10] THE ADSORPTION AND DESORPTION CHARACTERISTICS OF EDTA-CHELATED COPPER-ION BY ACTIVATED CARBON [J].

CHANG, C ;

KU, Y .

SEPARATION SCIENCE AND TECHNOLOGY, 1995, 30 (06) :899-915

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