The Effect of Alternating Current on the Rate of Dissolution of Carbon Steel in a Chloride Electrolyte. Part II. Cathode Potentials

被引：4

作者：

Marshakov, A. I. ^{[1
]}

Nenasheva, T. A. ^{[1
]}

Kasatkin, E. V. ^{[1
]}

Kasatkina, I. V. ^{[1
]}

机构：

[1] Frumkin Inst Phys Chem & Electrochem, Moscow 119571, Russia

来源：

PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2018年 / 54卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

carbon steel; corrosion; corrosion rate; alternating current; IRON PASSIVATION; CORROSION; KINETICS; DEFECTS; MODEL;

D O I：

10.1134/S2070205118070134

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Under the action of alternating current, the steel dissolution rate increases significantly in a 3.5% NaCl solution at the potentials of cathodic protection of structures. A characteristic potential-current dependence corresponding to metal passivation at cathode potentials is obtained. The conditions for forming local corrosion defects under the action of alternating current are determined. It is shown that the dependence of the cathode current on the peak value of the potential differs significantly from those predicted based on the effect of Faraday rectification of the alternating current. The main difference is the appearance of a maximum or an inflection on the current-peak potential curves, which can be explained by metal passivation.

引用

页码：1236 / 1245

页数：10

共 28 条

[1] Chloride threshold dependence of pitting potential of reinforcements
Alonso, C
Castellote, M
Andrade, C
[J]. ELECTROCHIMICA ACTA, 2002, 47 (21) : 3469 - 3481
[2] [Anonymous], 2006, 15280 CENTS
[3] [Anonymous], 2006, 96022005 GOST
[4] Brenna A., 2013, P CORR 2013 NACE INT
[5] Brenna A., 2009, THESIS, P158
[6] Carpentiers P., 2003, P EUROCORR 2003 BUD
[7] Drai D.M, 1982, ELECTROCHIM ACTA, V27, P1409, DOI [10. 1016/0013-4686(82)80031-5, DOI 10.1016/0013-4686(82)80031-5]
[8] Model investigation of the peculiarities of the corrosion and cathodic protection of steel in the insulation defects on underground steel pipelines
Freiman, LI
Kuznetsova, EG
[J]. PROTECTION OF METALS, 2001, 37 (05): : 484 - 490
[9] AC-Induced Corrosion of Underground Steel Pipelines. Faradaic Rectification under Cathodic Protection: I. Theoretical Approach with Negligible Electrolyte Resistance
Ibrahim, Ibrahim
Tribollet, Bernard
Takenouti, Hisasi
Meyer, Michel
[J]. JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2015, 26 (01) : 196 - 208
[10] Kablunovskii V.S, 1978, KONTSENTRATSIONNYE I

← 1 2 3 →