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Djoko Hadi Prajitno
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Enhancing Corrosion Resistance of AISI 1045 Carbon Steel Using Rosmarinus officinalis Extract: An Environmentally Friendly Approach Pawawoi, Pawawoi; Putra, Adi Ganda; Lesmana, Dera; Prajitno, Djoko Hadi; Septianissa, Selly
Jurnal Kartika Kimia Vol 8 No 2 (2025): Jurnal Kartika Kimia (In Progress)
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i2.976

Abstract

Corrosion is the greatest challenge faced by various industries, especially those in maritime regions. This study evaluates the effectiveness of Rosmarinus officinalis extract as a corrosion inhibitor for carbon steel AISI 1045 in artificial seawater. Steel samples with varying inhibitor concentrations (0, 30, 60, 90, and 120 ppm) were immersed for 25 days. The results indicate that the weight gain due to corrosion for the sample without an inhibitor reached 79.5 mg, while the use of rosemary significantly reduced the weight gain, with the lowest corrosion rates recorded at 90 ppm (0.003 mpy) and 120 ppm (0.005 mpy). The optimal inhibitor efficiency was achieved at 60 ppm (75.57%). Microstructural analysis showed a decrease in pitting corrosion thickness and the formation of a new phase, Fe₃O₄, which is more stable and protective. These findings emphasize the potential of rosemary extract as an environmentally friendly solution for controlling corrosion in carbon steel, particularly in corrosive environments like seawater.
Co-Authors Achmad, Tria Laksana Adi Ganda Putra Ahmad Syafiq Akhmad Ardian Korda, Akhmad Ardian Ambardi, Pradoto Ambardi, Pradoto Andi Mustari, Asril Pramutadi Aprilianda, Adam Artawan, I Nengah Bambang Ariwahjoedi Basuki, Eddy Agus Budi Prawara Dani Gustaman Syarif Dinanthi, Talitha Ratna Dipodiwiryo, Adam Arlei Dzikry Syamsul Nur Alam Engkir Sukirman Erie Martides Fadhli Muhammad Faizal Faizal, Faizal henny Mulyani I Gde Antha Kasmawan Ihwan Bayu Setiawan Immanuel, Perdana Jihad, Bagus Hayatul Juniansyah, Gibran Lathifah, Sri Mulyati Latifah, Sri Mulyati Lesmana, Dera Lestari, Ernyta Mei Muhammad Awwaluddin Mulyani, R. Henny Murzid, Jihan Qothrunada Mustari, Asrili Pramutadi Andi Nur Alam, Dzikry Syamsul Nur Alam, Dzikry Syamsul Nurrobi, Mohamad Iqbal Pawawoi, Pawawoi Pradoto Ambardi Pratama, Ahmad Brian Pratama, Naufal Randi R Henny Mulyani R. Henny Mulyani Raden Dadan Ramdan Raden Henny Mulyani Rahmanullah, Andhika Abdan Riza Wirawan Romadhona, Candra Dewi Roswita, Fahma Sarah Nasma'ul Aulia Selly Septianissa Setianto, Muhamad Hananuputra Setiawan, Yuniarto Hendrik Spardi, I Wayan Sri Bimo Pratomo, Sri Bimo Sri Hastuty, Sri Syuryana, Ekha Panji Tresna P. Soemardi Utami, Deva Ayu Vito, Mochammad Ghais Wafda, Hakimul Wayan Gede Suharta Widiawati, Nina Yongjin Kim, Yongjin Yuliani Carisca Tanjung