Volume 14, Issue 3 (12-2024)
مهندسی خوردگی 2024, 14(3): 74-74 |
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Heidari M, Eslami A. Effect of Surface Pre-treatment on the
Corrosion Resistance and Passive Film
Formation of Duplex Stainless-Steel in
Chloride Solution (NaCl). مهندسی خوردگی 2024; 14 (3) :74-74
URL: http://journal.ica.ir/article-1-233-en.html
URL: http://journal.ica.ir/article-1-233-en.html
Corrosion Engineering Expert, National Iranian South Oil Company (NISOC), Masjed-e-Suleyman (MIS) Field, Iran & Corrosion Engineering Expert, National Iranian South Oil Company (NISOC), Masjed-e-Suleyman (MIS) Field, Iran
Abstract: (27 Views)
This study indicates the corrosion behaviour of duplex stainless steel AISI 1803 in 3.5% NaCl solution
by different treatments, including mechanical polishing (MP), electropolishing (EP), chemical
passivation (CP), ultrasonic cleaning (UC), acid cleaning (AC), and applying cathodic potential. Cyclic
potentiodynamic measurement, electrochemical impedance spectroscopy (EIS), Mott–Schottky
analysis (capacitance measurements), scanning electron microscopy (SEM), and EDS were the
techniques used to characterize the properties of the formed passivation layer. The result showed EP
and UC specimen have the most corrosion resistance. This was attributed to the Chromium oxide film
formed on these specimens. Based on Mott–Schottky analysis, formed passivation layer on DSS at the
various treatments behave as n-type and p-type semiconductor in the potential range of around 250 up
to 1000 mV.
by different treatments, including mechanical polishing (MP), electropolishing (EP), chemical
passivation (CP), ultrasonic cleaning (UC), acid cleaning (AC), and applying cathodic potential. Cyclic
potentiodynamic measurement, electrochemical impedance spectroscopy (EIS), Mott–Schottky
analysis (capacitance measurements), scanning electron microscopy (SEM), and EDS were the
techniques used to characterize the properties of the formed passivation layer. The result showed EP
and UC specimen have the most corrosion resistance. This was attributed to the Chromium oxide film
formed on these specimens. Based on Mott–Schottky analysis, formed passivation layer on DSS at the
various treatments behave as n-type and p-type semiconductor in the potential range of around 250 up
to 1000 mV.
Type of Study: Research |
Subject:
General
Received: 2025/08/13 | Accepted: 2024/12/15 | Published: 2024/12/15
Received: 2025/08/13 | Accepted: 2024/12/15 | Published: 2024/12/15
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