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A New Approach in Corrosion Study Using DFT and Monte Carlo Simulation to Investigate the Synergistic Effects Natural Green Inhibitor Citrus Sinensis and Synthetic Benzotriazole on Low Carbon Steel
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Increasing the Corrosion Resistance of Type 201 Stainless Steel Pitting by Electrochemical Method in a Citric Acid Solution
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Increasing the Corrosion Resistance of Type 201 Stainless Steel Pitting by Electrochemical Method in a Citric Acid Solution

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Abstract:

This study investigates the corrosion resistance of Stainless Steel 201 through varying surface treatments and testing in a 3.5 wt% NaCl solution, mimicking seawater conditions. Given its prevalent use in industries like oil, Stainless Steel 201's resistance to pitting corrosion is crucial, primarily when used in pipes. The research employs electrochemical techniques, specifically Cyclic Voltammetry and Immersion, to treat the material's surface. The surface treatment using citrict acid (C₆H₈O₇) varying the concentration of 1, 1.5, and 2 M. Corrosion tests utilize open circuit potential, anodic polarization patterns, and characterization via optical microscopy and SEM-EDS. Results indicate that the material subjected to a Cyclic Voltammetry treatment with 2M citric acid exhibited the lowest corrosion rate at 0.001243 mmpy, with 21 instances of pitting corrosion. Conversely, untreated Stainless Steel 201 showed a higher corrosion rate of 0.006177 mmpy and 87 instances of pitting corrosion. This underscores the significant improvement in corrosion resistance achieved through the specified surface treatment, highlighting its potential value for enhancing Stainless Steel 201's longevity and performance in corrosive environments. Keywords: Stainless Steel 201, Cyclic Voltammetry, Immersion, Open Circuit Potential (OCP), Anodic polarization Patterns, Corrosion Rate, Pitting Corrosion.

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Periodical:

Solid State Phenomena (Volume 385)

Pages:

15-33

DOI:

https://doi.org/10.4028/p-47dZVC

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Online since:

February 2026

Authors:

Sri Hastuty, Muhammad Nur, Fatwa Khoirrun Nadhor*

Keywords:

Anodic Polarization Patterns, Corrosion Rate, Cyclic Voltammetry, Immersion, Open Circuit Potential (OCP), Pitting Corrosion, Stainless Steel 201

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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