Effect of cathodic protection potential fluctuations on pitting corrosion of X100 pipeline steel in acidic soil environment

被引：55

作者：

Dai, Mingjie ^{[1
]}

Liu, Jing ^{[1
]}

Huang, Feng ^{[1
]}

Zhang, Yaohua ^{[1
]}

Cheng, Y. Frank ^{[1
,2
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China

[2] Univ Calgary, Dept Mech & Mfg Engn, Calgary, AB T2N 1N4, Canada

来源：

CORROSION SCIENCE | 2018年 / 143卷

基金：

中国国家自然科学基金;

关键词：

Carbon steel; SEM; Polarization; Cathodic protection; Pitting corrosion; SQUARE-WAVE; X70; STEEL; INTERFERENCE; POLARIZATION;

D O I：

10.1016/j.corsci.2018.08.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of frequency and time of cathodic protection potential fluctuations on pitting corrosion of X100 pipeline steel was investigated by square wave polarization (SWP) and theoretical calculations. Results demonstrate that pitting corrosion can occur on the cathodically polarized steel and primarily produce on the steel matrix rather than non-metallic inclusions. The pit density increases with the total loading time of the SWP potential (t(t)) under identical SWP period (T). With the extended T, the density of pits decreases under the same t(t). The current and potential equations in the time and frequency domains are derived from calculation.

引用

页码：428 / 437

页数：10

共 23 条

[11] Deterministic modeling of API5L X52 steel in a coal-tar-coating/cathodic-protection system in soil [J].

Li, X. M. ;

Rosas, O. ;

Castaneda, H. .

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2016, 146 :161-170

[12] Understand the occurrence of pitting corrosion of pipeline carbon steel under cathodic polarization [J].

Liu, Z. Y. ;

Li, X. G. ;

Cheng, Y. F. .

ELECTROCHIMICA ACTA, 2012, 60 :259-263

[13] Electrochemical state conversion model for occurrence of pitting corrosion on a cathodically polarized carbon steel in a near-neutral pH solution [J].

Liu, Z. Y. ;

Li, X. G. ;

Cheng, Y. F. .

ELECTROCHIMICA ACTA, 2011, 56 (11) :4167-4175

[14] Local additional potential model for effect of strain rate on SCC of pipeline steel in an acidic soil solution [J].

Liu, Z. Y. ;

Li, X. G. ;

Du, C. W. ;

Cheng, Y. F. .

CORROSION SCIENCE, 2009, 51 (12) :2863-2871

[15] Mechanistic aspect of stress corrosion cracking of X80 pipeline steel under non-stable cathodic polarization [J].

Liu Zhiyong ;

Cui Zhongyu ;

Li Xiaogang ;

Du Cuiwei ;

Xing Yunying .

ELECTROCHEMISTRY COMMUNICATIONS, 2014, 48 :127-129

[16] Correlation of initiation of corrosion pits and metallurgical features of X100 pipeline steel [J].

Peng, X. Y. ;

Liang, G. C. ;

Jin, T. Y. ;

Cheng, Y. Frank .

CANADIAN METALLURGICAL QUARTERLY, 2013, 52 (04) :484-487

[17]

Prinz W., 1992, 1992 INT GAS RES C

[18] Electrochemical Behavior and Stress Corrosion Sensitivity of X70 Steel Under Disbonded Coatings in Korla Soil Solution [J].

Qian, Hongchang ;

Wang, Luntao ;

Wang, Huiru ;

Zheng, Wenru ;

Zhang, Dawei ;

Du, Cuiwei .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2016, 25 (11) :4657-4665

[19] Accelerated corrosion of pipeline steel and reduced cathodic protection effectiveness under direct current interference [J].

Qian, Shan ;

Cheng, Y. Frank .

CONSTRUCTION AND BUILDING MATERIALS, 2017, 148 :675-685

[20] THEORY OF SQUARE WAVE VOLTAMMETRY [J].

RAMALEY, L ;

KRAUSE, MS .

ANALYTICAL CHEMISTRY, 1969, 41 (11) :1362-&

← 1 2 3 →