Application of Electrochemical Impedance Spectroscopy for Monitoring Stress Corrosion Cracking

CORROSION ◽  
2001 ◽  
Vol 57 (6) ◽  
pp. 532-539 ◽  
Author(s):  
R. W. Bosch ◽  
F. Moons ◽  
J. H. Zheng ◽  
W. F. Bogaerts
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Electrochemical Impedance ◽  
Corrosion Cracking

Investigating the influence of hydrogen on stress corrosion cracking of 2205 duplex stainless steel in sulfuric acid by electrochemical impedance spectroscopy

2017 ◽  
Vol 35 (1) ◽  
pp. 23-33 ◽  
Author(s):  
Chuanbo Zheng ◽  
Guo Yi
Keyword(s):  
Stainless Steel ◽  
Sulfuric Acid ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Stress Corrosion ◽  
Duplex Stainless Steel ◽  
Stress Corrosion Cracking ◽  
Electrochemical Impedance ◽  
Corrosion Cracking ◽  
2205 Duplex Stainless Steel

AbstractAs a nondestructive and sensitive method, electrochemical impedance spectroscopy (EIS) can be used to investigate the passivation and breakdown of passive films on steel. In this study, EIS, combined with slow strain rate test and scanning electron microscopy, was employed to study the stress corrosion cracking (SCC) behavior of 2205 duplex stainless steel in 0.5 m sulfuric acid solution under hydrogen-charging conditions. Results showed that the corrosion resistance of passive film on the hydrogen-charged specimen was lower than that for the specimen with no hydrogen charge. Hydrogen-induced cracking was evident after the specimens had been charged for 24 h. The phase shift in EIS, calculated from frequencies between 0.1 and 10 Hz, could be used to monitor the SCC process.

The Inhibition Effect of Imidazoline and Diethylene Triamine on the Stress Corrosion Cracking of 08Cr2AlMo Steel in H2S Solution

2007 ◽  
Vol 353-358 ◽  
pp. 2467-2470
Author(s):  
Yao Feng Zhang ◽  
Bo Qin Gu
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Water Solution ◽  
Corrosion Cracking ◽  
Inhibition Effect ◽  
Diethylene Triamine ◽  
Scanning Electron ◽  
Better Than

08Cr2AlMo steel is a type of material developed especially for heat exchanger pipe bundle used under H2S condition in the recent years. In this paper, some researches were carried out on the stress corrosion cracking (SCC) susceptivity of 08Cr2AlMo steel in H2S water solution and the inhibition of imidazoline and diethylene triamine on the SCC by means of slow strain rate tensile test, scanning electron microscopy, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results indicate that 08Cr2AlMo steel is highly susceptible to SCC in saturated H2S solution for the fracture surfaces of specimen show typical quasi-cleavage fracture. The addition of both imidazoline and diethylene triamine into saturated H2S solution is effective on inhibiting the SCC. The inhibitors can reduce the potential of the cathodic hydrogen evolution, which prevents the penetration of hydrogen into the specimen effectively. Furthermore, inhibitors accelerate the formation of the chemically bonded film on the steel surface. It is also found that when the concentration of inhibitors is below 0.2%, there is no obvious inhibition effect on SCC, and the inhibition effect of diethylene triamine is better than that of imidazoline.

Detection of Stress Corrosion Cracking in a Dual-Phase Steel Using Electrochemical Noise and Impedance Spectroscopy

CORROSION ◽  
10.5006/0681 ◽  
2013 ◽  
Vol 69 (1) ◽  
pp. 85-94 ◽  
Author(s):  
E.J. Carpintero-Moreno ◽  
J.G. Gonzalez-Rodriguez ◽  
J. Uruchurtu-Chavarin ◽  
I. Rosales ◽  
B. Campillo ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Dual Phase Steel ◽  
Electrochemical Noise ◽  
Corrosion Cracking ◽  
Dual Phase ◽  
Detection Of Stress

Micro-Electrochemical Characterization of the Synergism of Hydrogen and Stress in Anodic Dissolution of Steel and Its Implication on Pipeline Stress Corrosion Cracking

2008 ◽  
Author(s):  
Y. Frank Cheng ◽  
X. Tang
Keyword(s):  
Stress Corrosion ◽  
Anodic Dissolution ◽  
Stress Corrosion Cracking ◽  
Electrochemical Impedance ◽  
Product Layer ◽  
Corrosion Cracking ◽  
Stress Effect ◽  
Effect Factor ◽  
Neutral Ph ◽  
Corrosion Product Layer

Localized electrochemical impedance spectroscopy (LEIS) technique was used to investigate the effects of stress and hydrogen as well as their synergism on anodic dissolution of steel under near-neutral pH condition where pipeline stress corrosion cracking (SCC) has been reported. There exists a threshold stress value, under which there is little effect of applied stress on anodic dissolution of steel. Above the value, the dissolution rate of steel increases with the stress. Hydrogen-charging enhances anodic dissolution of steel, which is attributed to the effect of hydrogen on the formation of corrosion product layer and the activation of the steel. The stress effect factor and the stress-hydrogen synergism effect factor are quantified. A detailed analysis shows that the synergism of stress and hydrogen at crack tip is expected to play an important role in near-neutral pH SCC of pipelines.

scholarly journals Corrosion Behavior and Susceptibility to Stress Corrosion Cracking of Leaded and Lead-Free Brasses in Simulated Drinking Water

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 144
Author(s):  
Jamal Choucri ◽  
Andrea Balbo ◽  
Federica Zanotto ◽  
Vincenzo Grassi ◽  
Mohamed Ebn Touhami ◽  
...  
Keyword(s):  
Drinking Water ◽  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Stress Corrosion Cracking ◽  
Distribution Systems ◽  
Electrochemical Impedance ◽  
Chloride Concentration ◽  
Corrosion Cracking ◽  
Lead Free ◽  
Diffusion Control

Duplex α + β’ brasses are widely used in drinking water distribution systems for tube fittings, valves, and ancillaries because they are low cost, easy to fabricate, and exhibit high mechanical strength. However, depending on application conditions and alloy composition, they may undergo dealloying and stress corrosion cracking. In this research, three different brass types, two leaded (CW617N and CW602N) alloys and one lead-free brass (CW724R), were investigated to assess their corrosion behavior and susceptibility to stress corrosion cracking (SCC) in simulated drinking water (SDW) solutions containing different chloride concentrations, compatible with drinking water composition requirements according to Moroccan standard NM 03.7.001. The corrosion behavior was assessed by electrochemical tests such as polarization curve recording and electrochemical impedance spectroscopy (EIS) monitoring, coupled to SEM-EDS surface observations. The susceptibility to SCC was investigated by slow strain rate tests (SSRT). The tests showed that corrosion was mainly under diffusion control and chlorides slightly accelerated corrosion rates. All alloys, and particularly CW617N, were affected by SCC under the testing conditions adopted and in general the SCC susceptibility increased at increasing chloride concentration.

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