Use of Electrochemical Noise (EN) Technique to Study the Effect of sulfate and Chloride Ions on Passivation and Pitting Corrosion Behavior of 316 Stainless Steel

2007 ◽  
Vol 16 (4) ◽  
pp. 494-499 ◽  
Author(s):  
M.G. Pujar ◽  
T. Anita ◽  
H. Shaikh ◽  
R.K. Dayal ◽  
H.S. Khatak
2011 ◽  
Vol 17 (4) ◽  
pp. 477-483 ◽  
Author(s):  
M.D. Asaduzzaman ◽  
Chand Mohammad ◽  
Islam Mayeedul

The pitting corrosion behavior of the austenitic stainless steel in aqueous chloride solution was investigated using electrochemical technique. Corrosion potential (Ecorr) measurement, potentiodynamic experiments, potential-hold experiments in the passive range, and microscopic examination were used for the evaluation of corrosion characteristics. The experimental parameters were chloride ion concentration, immersion time and anodic-hold potential. Ecorr measurements along with microscopic examinations suggest that in or above 3.5 % NaCl at pH 2 pitting took place on the surface in absence of applied potential after 6 hour immersion. The potentiodynamic experiment reveals that Ecorr and pitting potential (Epit) decreased and current density in the passive region increased with the increase of chloride ion concentrations. A linear relationship between Epit and chloride ion concentrations was found in this investigation. The analysis of the results suggests that six chloride ions are involved for the dissolution of iron ion in the pitting corrosion process of austenitic stainless steel.


Solar Energy ◽  
2021 ◽  
Vol 223 ◽  
pp. 1-10
Author(s):  
Sen Ren ◽  
Yanjun Chen ◽  
Xiang-Xi Ye ◽  
Li Jiang ◽  
Shuai Yan ◽  
...  

2019 ◽  
Vol 22 (suppl 1) ◽  
Author(s):  
Stephania Cappellari de Rezende ◽  
Isabela Dainezi ◽  
Raíra Chefer Apolinario ◽  
Lucíola Lucena de Sousa ◽  
Neide Aparecida Mariano

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