Evaluation of cavitation erosion-corrosion degradation of mild steel by means of dynamic impedance spectroscopy in galvanostatic mode

被引：61

作者：

Ryl, J. ^{[1
]}

Darowicki, K. ^{[1
]}

Slepski, P. ^{[1
]}

机构：

[1] Gdansk Univ Technol, Dept Electrochem Corros & Mat Engn, PL-80952 Gdansk, Poland

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 05期

关键词：

Mild steel; EIS; Erosion; LOW-ALLOY STEEL; TRANSFORMATION; BEHAVIOR;

D O I：

10.1016/j.corsci.2011.02.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cavitation erosion and corrosion of mild steel was studied by means of a vibratory facility in 3% w/w NaCl solution. Dynamic Electrochemical Impedance Spectroscopy (DEIS) measurements were carried out in the galvanostatic mode to allow on-line monitoring of impedance parameters in cavitation failure. The results, based on an analysis of instantaneous impedance spectra, correspond to degradation under the influence of cavitation erosion-corrosion. It has been shown that a change of pseudo-capacitance corresponds to an increase in sample roughness, while the charge-transfer resistance determines changes in the corrosion rate under the combined mechanical and electrochemical factors. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1873 / 1879

页数：7

共 35 条

[1]

[Anonymous], G3298 ASTM

[2]

[Anonymous], G11993 ASTM

[3]

[Anonymous], 2002, SERIES HYDRAULIC MAC

[4]

COHEN L, 1992, TIME FREQUENCY SIGNA

[5]

Cohen L., 1995, TIME FREQUENCY ANAL

[6] Mass transport in sonovoltammetry with evidence of hydrodynamic modulation from ultrasound [J].

Cooper, EL ;

Coury, LA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (06) :1994-1999

[7] Theoretical description of the measuring method of instantaneous impedance spectra [J].

Darowicki, K .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2000, 486 (02) :101-105

[8] Impedance characterization of the process of polyaniline first redox transformation after aniline electropolymerization [J].

Darowicki, K ;

Kawula, J .

ELECTROCHIMICA ACTA, 2004, 49 (27) :4829-4839

[9] Dynamic electrochemical impedance spectroscopy of the first order electrode reaction [J].

Darowicki, K ;

Slepski, P .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2003, 547 (01) :1-8

[10] CORROSION FACTOR IN CAVITATION OF STEEL [J].

ENGELBERG, G ;

YAHALOM, J .

CORROSION SCIENCE, 1972, 12 (05) :469-+

← 1 2 3 4 →