Electrochemical impedance spectroscopy analysis of X70 pipeline steel stress corrosion cracking in high pH carbonate solution

2012 ◽  
Vol 61 ◽  
pp. 111-122 ◽  
Author(s):  
A.A. Oskuie ◽  
T. Shahrabi ◽  
A. Shahriari ◽  
E. Saebnoori
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Electrochemical Impedance ◽  
Pipeline Steel ◽  
Corrosion Cracking ◽  
Spectroscopy Analysis ◽  
X70 Pipeline Steel ◽  
Impedance Spectroscopy Analysis

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.

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