Title : ( The Contrast between the Pitting Corrosion of 316 SS in NaCl and NaBr Solutions: Part II. Morphology, Chemistry, and Stabilization of the Pits )
Authors: , Mohammad Hadi Moayed , Mostafa Mirjalili ,
Full TextAbstract
This paper intends to evaluate the pit chemistry characteristics of 316 austenitic stainless steel in NaCl and NaBr solutions while discussing the pitting transition from metastability to stability. Results reveal that increasing the relative concentration of bromide increases the critical and saturation concentrations of cations, which are, respectively, requisites for pit survival and salt precipitation. Besides, bromide causes the ohmic solution resistance of the pit solution to increase. Consequently, it intensifies the pit transition from metastability to stability and retards the occurrence of the stable pitting. The morphology of the pits and the influence of the pit lacy cover on the pit stabilization in NaCl and NaBr solution are also discussed. It was also observed that contrary to metastable pits, salt-covered stable ones have higher growth kinetics in the presence of bromide.
Keywords
pitting corrosion. halide ions
@article{paperid:1075530,
author = {, and Moayed, Mohammad Hadi and Mirjalili, Mostafa},
title = {The Contrast between the Pitting Corrosion of 316 SS in NaCl and NaBr Solutions: Part II. Morphology, Chemistry, and Stabilization of the Pits},
journal = {Journal of the Electrochemical Society},
year = {2019},
volume = {166},
number = {12},
month = {January},
issn = {0013-4651},
keywords = {pitting corrosion. halide ions},
}
%0 Journal Article
%T The Contrast between the Pitting Corrosion of 316 SS in NaCl and NaBr Solutions: Part II. Morphology, Chemistry, and Stabilization of the Pits
%A ,
%A Moayed, Mohammad Hadi
%A Mirjalili, Mostafa
%J Journal of the Electrochemical Society
%@ 0013-4651
%D 2019
