Corrosion, ( ISI ), Volume (73), No (2), Year (2017-2) , Pages (181-191)

Title : ( Inhibitive effect of nitrate on pitting corrosion of 17-4PH stainless steel )

Authors: Mahla Seyedi , Mostafa Mirjalili , Iman Taji , Omid Armat , Mohammad Hadi Moayed ,

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In this work, the inhibition effect of nitrate on the pitting corrosion of 17-4PH stainless steel was investigated in the chloride solution. Potentiodynamic and potentiostatic techniques were used to measure the pitting potential and induction time in various concentrations of chloride and nitrate ions. According to the results, the equation of Epit = 259.1 − 147.4 log½Cl− + 52.1 log½NO− 3 was developed to show the relationship between the pitting potential and the concentrations of nitrate and chloride ions at room temperature. Moreover, it has been shown when the ratio of ½NO− 3=½Cl−1.02 is greater than a threshold value of 0.35, the alloy remains passive in whole potentials during the potentiodynamic experiments. In addition, the results indicated that pitting is rarely observed in the potentials above the 400 mVSCEin the chloride solutions containing nitrate.

Keywords

, 17-4PH steel, chloride, inhibitor, nitrate, pitting
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@article{paperid:1062554,
author = {Seyedi, Mahla and Mirjalili, Mostafa and Taji, Iman and Armat, Omid and Moayed, Mohammad Hadi},
title = {Inhibitive effect of nitrate on pitting corrosion of 17-4PH stainless steel},
journal = {Corrosion},
year = {2017},
volume = {73},
number = {2},
month = {February},
issn = {0010-9312},
pages = {181--191},
numpages = {10},
keywords = {17-4PH steel; chloride; inhibitor; nitrate; pitting corrosion},
}

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%0 Journal Article
%T Inhibitive effect of nitrate on pitting corrosion of 17-4PH stainless steel
%A Seyedi, Mahla
%A Mirjalili, Mostafa
%A Taji, Iman
%A Armat, Omid
%A Moayed, Mohammad Hadi
%J Corrosion
%@ 0010-9312
%D 2017

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