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Mashadi Mashadi
Pusat Teknologi Bahan Industri Nuklir – BATAN Gedung 71-BATAN Kawasan Puspiptek Serpong, Tangerang Selatan 15314
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Journal : Science and Technology Indonesia

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Sustainable Corrosion Protection of Stainless Steel 316L in Marine Environment Using Electrophoretically Deposited Garlic Extract Green Inhibitor: Electrochemical and Surface Analysis Arwati, IG. Ayu; Ginting, Dianta; Feriyanto, Dafit; Golwa, Gian Villany; Yuliarty, Popi; Tarigan, Kontan; Damar, Stenlly; Khuzaimah; Mashadi, Mashadi
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.447-456

Abstract

The increasing demand for sustainable and environmentally friendly corrosion inhibitors has driven research toward green alternatives to conventional toxic inhibitors. This study investigates the corrosion protection performance of garlic extract (Allium sativum) as an eco-friendly green inhibitor for stainless steel 316L in 3.5% NaCl marine environment. The inhibition efficiency was evaluated using electrochemical potentiodynamic polarization techniques, complemented by comprehensive surface characterization through scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry analysis. Electrophoretic deposition (EPD) was employed to apply garlic extract concentrations of 8, 10, and 12 mL onto SS316L specimens. Results demonstrated significant corrosion rate reduction from 0.0082732 mmpy (unprotected specimen) to 0.0014547 mmpy with 12 mL garlic extract treatment, achieving maximum inhibition efficiency of 82%. EIS revealed substantial increase in charge transfer resistance (>170 kΩ), while electrochemical analysis demonstrated mixed-type inhibition behavior with reduced corrosion current densities. SEM-EDX confirmed the formation of protective Fe2+-allicin complex layers on the metal surface, while Raman spectroscopy showed substantial reduction in corrosion products (a-Fe2O3 and y-FeOOH) formation. Cyclic voltammetry demonstrated a five-order-of-magnitude reduction in diffusion rate, confirming exceptional barrier properties. The superior performance is attributed to the chemisorption of sulfur and oxygen-containing compounds in allicin molecules onto active steel sites, forming stable protective films. This green inhibitor demonstrates excellent potential for sustainable corrosion protection in marine and industrial applications, offering an environmentally benign alternative to synthetic inhibitors.
Co-Authors A, Finu Audian A. Mahendra, A. Aang Munawar Abdul Ghofur Adil Fadillah Ahmad, Cicin Akhmad Aminuddin Bama, Akhmad Aminuddin Alberta Rika Pratiwi Amwila P, Andi Yudha Andi Alatas, Andi Andriani, Dessy Astrini, Danti Audian A, Finu Ayu Puspita, Dian Badru, Mohamad Bambang Sugeng Barutu, Fabelia Andani Chatarina Umbul Wahyuni Chezy WM Vermila, Chezy WM Dafit Feriyanto Damar, Stenlly Dianta Ginting Dinata, Muhammad Farhan Eka Pratama, Berli Fionari, Gebi Fitrian, Achmad Gen Gen Gendalasari Gian Villany Golwa Gustia Kusuma Wardani Hadi, Nariman Hariadi Hariadi Hassanee, Narrong Heti Herawati Husnul Khatimah Hutabarat, Arnold Sultantio Hutajulu, Olnes Yosefa I Gusti Ayu Arwati Jamalludin, Jamalludin Jamaludin . Jaya, Pinto Kesambamula, Eldipalma Kesambamula, Eldipama Khim, Soei Khoir, Ahmad Din KHUZAIMAH Kinanti Wijaya, Kinanti Kusuma Wardani, Gustia Kusuma, Arya Diki Mahidin Mahidin Mahrani, Mahrani Mariana Mariana Marlina, Gusti Marniati, Felicitas Sri Melisasmi, Melisasmi Muhammad Rifqi muhammad rizky, muhammad Mumuh Mulyana Mustaqimah Mustaqimah Nariman, Nariman Novita Sari Nurmaya Arofah Pratama, Berli Eka Pratiwi, Delisa Putri, Rika Andriyani Rachmawati, Indri Ramlan, H. Ratih Puspitasari Retno Martanti Endah Lestari Riyadi, Rizal Rusliana, Selvia Naca Saeful Yusuf Sapridawati, Yeni Sasmi, Meli Satyamulya, Reynaldi Rivanus Seprido Seprido, Seprido Setyo Purwanto SIREGAR, TESALONIKA Sitorus, Mido Ester Soedargo, Bayu Sri Gemawati Sugik Sugiantoro, Sugik Sukmana, Sugi Andrian Sulistiono susanto, haris Syafitri, sukma Novia Tambunan, Melenia Tarigan, Kontan Tilopa, Era Napra Togar Saragi, Togar Vermila, Chezy Wibisono, Sandy Wisnu A. Adi Wisnu Ari Adi Yoyon Supriadi Yuliardani, Novita Yuliarty, Popi Yunasfi . yunasfi yunasfi Yunasfi, Yunasfi - Yusdira, Ade Zul Azhar