INHIBISI KOROSI BAJA RINGAN MENGGUNAKAN BAHAN ALAMI DALAM MEDIUM ASAM KLORIDA: Review

Stiadi, Yeni; Arief, Syukri; Aziz, Hermansyah; Efdi, Mai; Emriadi, E.

doi:10.25077/jrk.v12i2.321

Cited by 7 publications

(7 citation statements)

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“…The greater the concentration of Cl-ions, the more likely they will be adsorbed to the metal surface and destroy the oxide layer (Mobin et al, 2016;Tan et al, 2021). As a result, the direct contact between the metal surface and the HCl environment increases the corrosion rate, which is characterized by a low percent efficiency (Haruna & Saleh, 2021;Odewunmi et al, 2020;Stiadi et al, 2019). Low inhibition efficiency at an HCl concentration of 0.25 M occurs because, at low concentrations, the electrolyte properties of the solution increase, and the electrical conductivity is greater so that the corrosion rate is faster (Cheng et al, 2011;Guo & An, 2005;Venkateswarlu et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Utilization of Chitosan as an Inhibitor to Improve the Corrosion Resistance of Low-Carbon Steel

Gemala¹,

Fajrin

Aryswan

et al. 2023

j. sains. teknologi.

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The Batam industry materials are steel, an alloy material between iron and carbon, and a few other elements. Low-carbon steel is one type of metal. However, this low-carbon steel has the disadvantage of corrosion resistance, mainly if applied to corrosive environments. In the utilization of Low carbon steel in the industry, corrosion can cause problems and cost a lot of money in its maintenance. Chitosan contained in invertebrate animals is predicted to be able to prevent corrosion as an inhibitor. This study aims to analyze the optimal conditions of chitosan inhibitors against the corrosion rate of low-carbon steel in environments with variations in the length of immersion of specimens in corrosive media. This study is a true-experimental study with a pre-post-test design. The determination of the optimal conditions of corrosion inhibition of low-carbon steel plate specimens by chitosan was carried out with variations in the parameters of HCl concentration, specimen immersion time, and chitosan concentration. The analysis carried out is the measurement of specimen weight loss in each parameter by determining the difference in weight before and after the experiment and determining the efficiency of the inhibitor. The experiment’s results showed that the optimal conditions of inhibition of corrosion were at 1M HCl, 400ppm chitosan, and a soaking time of 3 days with an efficiency of 48%. The efficiency value of this optimum corrosion inhibition of chitosan in low-carbon steel is 48%. To improve the efficiency of corrosion inhibition, it is necessary to further research with higher accuracyTo determine the effect of inhibition of corrosion using chitosan on the quality of steel surfaces, it is necessary to analyze the steel surface structure using ultrasonic testing or using XRD Analysis.

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Section: Discussionmentioning

confidence: 99%

Utilization of Chitosan as an Inhibitor to Improve the Corrosion Resistance of Low-Carbon Steel

Gemala¹,

Fajrin

Aryswan

et al. 2023

j. sains. teknologi.

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“…Namun, dilingkungan asam baja lunak ini cenderung mengalami korosi dalam lingkungan asam seperti dilingkungan tanah gambut. Kerusakan yang dihasilkan M 25101-2 dari suatu reaksi kimia antara sebuah logam didalam lingkungan asam akan menyebabkan suatu proses korosi [2].…”

Section: Pendahuluanunclassified

Kalium Iodida (KI) Dan Ekstrak Air Getah Merkubung (Macaranga Gigantea) Terhadap Inhibisi Korosi Pada Baja Lunak Dalam Media Air Gambut

Pradina

Prasetio

Gusti

et al. 2023

JPS

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ABSTRAK: Lahan gambut terbesar di dunia terdapat disalah satu negara yaitu Indonesia. Lahan gambut diIndonesia terutama terdapat diSumatra, Papua dan Kalimantan. Umumnya keperluan konstruksi bangunan cepat terjadi proses korosi dilingkungan yang asam seperti dilingkungan tanah gambut. Korosi merupakan permasalahan umum yang sering terjadi dilingkungan sekitar. Cara yang dapat dilakukan untuk memperlambat laju reaksi korosi, diantaranya dengan penambahan zat tertentu yang berfungsi sebagai inhibitor alami seperti ekstrak bahan alam. Ekstrak getah merkubung (Macaranga gigantea) dengan penambahan KI 0,02 M berpotensi sebagai inhibitor korosi pada baja lunak dalam media air gambut. Metode yang digunakan yaitu kehilangan berat dengan variasi konsentrasi ekstrak dan variasi suhu. GKarakterisasi yang digunakan yaitu Spektrofotometri Fourier Transform Infrared (FTIR) untuk mengidentifikasi gugus fungsi tertentu pada senyawa metabolit sekunder dari ekstrak air getah Macaranga gigantea dan KI 0,02 M. Scanning Electron Microscopy (SEM) Untuk memberikan informasi mengenai morfologi permukaan baja. Nilai efisiensi inhibisi ekstrak getah merkubung (Macaranga gigantea) dengan penambahan KI 0,02 M pada baja lunak dalam media air gambut meningkat seiring meningkatnya konsentrasi ekstrak dan meningkatnya suhu perendaman.

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“…The adsorbed layer is formed by coordinating covalent bonds through the lone pair donor-acceptor phenomenon of the inhibitor molecule heteroatom group with the vacant d-orbital of the iron surface atom and/or the interaction between theelectron of the inhibitory moleule aromatic ring and the vacant d-orbital of the iron surface atom. The active group or functional group (such as a heteroatom) on the inhibitor molecule will donate free electrons to the empty d-orbital of the metal surface, while the π-orbital on the aromatic ring of the inhibitor molecule will accept the π-electron from the empty d-orbital of the metal [17][43] [44].…”

Section: Corrosion Inhibition Mechanismmentioning

confidence: 99%

Investigation of Natural Extracts as Green Corrosion Inhibitors in Steel Using Density Functional Theory

Akrom¹

2022

J. Teori Apl. Fis.

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Steel is a material that has low resistance to corrosion when interacting with a corrosive environment. The application of natural extracts as green inhibitors is able to provide good performance in inhibiting corrosion of steel with high inhibition efficiency. Natural extracts that are effective and efficient as corrosion inhibitors on steel are those which in their compound structure contain heteroatom groups (such as O, N, S, P) and aromatic rings. This work provides an important comparative overview for the development of green inhibitor natural extracts in steel. The results of theoretical studies based on quantum mechanics with the DFT method at the atomic level based on molecular orbitals, chemical quantum parameters, and adsorption characteristics show results that are in accordance with experimental studies. The frontier molecular orbital (FMO) plot shows the distribution of electron density in the HOMO-LUMO region as a predictor of the active site of the inhibitor molecule interacting with the steel surface. Quantum chemical parameters such as ionization potential (I), electron affinity (A), absolute electronegativity (χ), hardness (η), softness (σ), fraction of electrons transferred (ΔN), electrophilicity (ɷ), and electron backdonation (ΔEback-donation) was calculated to obtain a correlation between the electronic properties of the inhibitor molecule and the corrosion inhibition potential. The results of the calculation of the quantum chemical parameters show the reactivity of the inhibitor molecule which has a very good potential to interactand bind strongly to the steel surface. This has the potential to make the inhibitor molecule have a high inhibition efficiency. Chemical adsorption and/or physical adsorption by forming complex compounds between inhibitor molecules and the steel surface are corrosion inhibition mechanisms to protect steel from a corrosive environment.The development of future studies should be able to display the mechanism of interaction and inhibition of inhibitor molecules in more detail and systematically at the atomic level on several metal surfaces such as Fe, Al, Cu, and others.

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INHIBISI KOROSI BAJA RINGAN MENGGUNAKAN BAHAN ALAMI DALAM MEDIUM ASAM KLORIDA: Review

Cited by 7 publications

References 0 publications

Utilization of Chitosan as an Inhibitor to Improve the Corrosion Resistance of Low-Carbon Steel

Utilization of Chitosan as an Inhibitor to Improve the Corrosion Resistance of Low-Carbon Steel

Kalium Iodida (KI) Dan Ekstrak Air Getah Merkubung (Macaranga Gigantea) Terhadap Inhibisi Korosi Pada Baja Lunak Dalam Media Air Gambut

Investigation of Natural Extracts as Green Corrosion Inhibitors in Steel Using Density Functional Theory

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