Corrosion, ( ISI ), Volume (69), No (3), Year (2013-3) , Pages (230-242)

Title : ( New High-Resolution Solution for Measuring Degree of Sensitization of Duplex Stainless Steel 2205 Using Double-Loop Electrochemical Potentiodynamic Reactivation Technique )

Authors: Behtash Hashemi Salanghouch , Ali Davoodi , Mojtaba Momeni , Mohammad Hadi Moayed ,

Citation: BibTeX | EndNote

In the present work, a new high-resolution solution for measuring degree of sensitization (DOS) of duplex stainless steel (DSS) 2205 (UNS S31803) by double loop-electrochemical potentiodynamic reactivation (DL-EPR) technique was obtained and the solution parameters were optimizing using the Taguchi method. Sensitized samples in three different conditions were chosen and five solution main factors including acid and two types of depassivator concentrations, scan rate, and surface roughness were considered. To reduce the number of experiments, Taguchi orthogonal array (OA) was used. The resulting optimal condition was to be 0.5 M sulfuric acid (H2SO4), 0.002 M sodium thiosulfate (Na2S2O3), 0.02 M sodium chloride (NaCl), and 120 grid in surface roughness and 30 mV/min scan rate. By introducing the new solution, a DOS value of 78% was obtained in the DSS2205 sample sensitized at 850°C for 40 min. Moreover, topography variations of non-sensitized and sensitized samples measured by atomic force microscopy elucidated the mechanism of austenite/ ferrite boundary attack and carbide precipitates formation in sensitized samples extended to the ferrite phase.

Keywords

, atomic force microscopy, double-loop electrochemical , potentiodynamic technique, duplex stainless steel, sensitization, Taguchi
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1034219,
author = {Hashemi Salanghouch, Behtash and Davoodi, Ali and Momeni, Mojtaba and Moayed, Mohammad Hadi},
title = {New High-Resolution Solution for Measuring Degree of Sensitization of Duplex Stainless Steel 2205 Using Double-Loop Electrochemical Potentiodynamic Reactivation Technique},
journal = {Corrosion},
year = {2013},
volume = {69},
number = {3},
month = {March},
issn = {0010-9312},
pages = {230--242},
numpages = {12},
keywords = {atomic force microscopy; double-loop electrochemical ،potentiodynamic technique; duplex stainless steel; sensitization; Taguchi method},
}

[Download]

%0 Journal Article
%T New High-Resolution Solution for Measuring Degree of Sensitization of Duplex Stainless Steel 2205 Using Double-Loop Electrochemical Potentiodynamic Reactivation Technique
%A Hashemi Salanghouch, Behtash
%A Davoodi, Ali
%A Momeni, Mojtaba
%A Moayed, Mohammad Hadi
%J Corrosion
%@ 0010-9312
%D 2013

[Download]