scholarly journals Correlation between Corrosion Potential and Pitting Potential for AISI 304L Austenitic Stainless Steel in 3.5% NaCl Aqueous Solution

2002 ◽  
Vol 5 (1) ◽  
pp. 77-84 ◽  
Author(s):  
Neusa Alonso-Falleiros ◽  
Stephan Wolynec
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.


1999 ◽  
Vol 23 (1) ◽  
pp. 38-39
Author(s):  
N. Bellakhal ◽  
K. Draou ◽  
J. L. Brisset

Exposure of a 304 stainless steel sample to an inductively coupled low pressure radio frequency (RF) nitrogen plasma leads to the formation of a nitriding layer. The protective properties of this layer are investigated by electrochemical methods. The corrosion potential of the steel in an aqueous solution depends on the working parameters of the plasma such as the time exposure and the distance between the steel sample and the high voltage (HV) coil of the treatment reactor.


2019 ◽  
Vol 44 (23) ◽  
pp. 12228-12238 ◽  
Author(s):  
Andreas Röhsler ◽  
Oded Sobol ◽  
Wolfgang E.S. Unger ◽  
Thomas Böllinghaus

2012 ◽  
Vol 60 (10) ◽  
pp. 4065-4076 ◽  
Author(s):  
A. Martinavičius ◽  
G. Abrasonis ◽  
A.C. Scheinost ◽  
R. Danoix ◽  
F. Danoix ◽  
...  

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