scholarly journals THE EFFICIENCY OF CRUDE CORROSION INHIBITOR AND GAS CORROSION INHIBITOR BY USING CARBON STEEL 1018 WITH POLARIZATION METHOD

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Puji Astuti Ibrahim
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Low Carbon ◽  
Polarization Method ◽  
Corrosive Media ◽  
Gas Corrosion

Carbon Steel 1018 is a low carbon steel having a carbon content (C) of 0.14-0.20% (<0.30% C). Low carbon steel is commercially known as mild steel. Corrosion is one way to prevent corrosion caused by the environment. Corrosion inhibitor are taken between the Crude Corrosion Inhibitor and Gas Corrosion inhibitor on Carbon Steel 1018 using the polarization method. Corrosion inhibitors work by making passive layers in the form of thin films or films on the surface of the material used as a barrier between metals and corrosive media. The analysis method used is polarization. Inhibition Efficiency Results obtained for Gas Corrosion Inhibitors (1A) at 10 ppm 96.86%, 20 ppm 59.74%, 30 ppm 74.48%. The Crude Corrosion Inhibitor (2A) results obtained inhibition efficiency for 10 ppm 99.57%, 20 ppm 77.69%, and 30 ppm 12.63%. The optimum value for the Gas Corrosion Inhibitor and Crude Corrosion Inhibitor is at 10 ppm at 96.86% and 99.57%. Keywords: carbon steel,crude corrosion inhibitor, corrosion , gas corrosion inhibitor, inhibitor

Phenylcoumarin Glucoside as a Natural Inhibitor in the Protection of Low Carbon Steel Against Corrosion

MRS Advances ◽  
2017 ◽  
Vol 2 (62) ◽  
pp. 3909-3915
Author(s):  
Héctor M. Barbosa Cásarez ◽  
Araceli Espinoza Vázquez ◽  
Francisco J. Rodríguez-Gomez
Keyword(s):  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Electrochemical Techniques ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Low Carbon ◽  
Low Concentrations ◽  
Natural Inhibitor ◽  
Polarization Studies

AbstractPhenylcoumarin glucoside (4-PC) is a compound extracted from the plant Hintona latiflora and was studied as inhibitor for AISI 1018 steel corrosion in 3% NaCl solution using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques, which may find application as eco-friendly corrosion inhibitors. The 4-PC provides inhibitor properties that protect AISI 1018 low carbon steel against corrosion at low concentrations (5 ppm) obtained by EIS. Polarization studies showed that the inhibitor was of mixed type. The inhibition efficiency by the two electrochemical techniques shows similar results. The inhibitor adsorption was demonstrated to be a combined process (physisorption and chemisorption) according to the Langmuir isotherm.

ACTIVE-POLYPHENOLIC-COMPOUNDS-RICH GREEN INHIBITOR FOR THE SURFACE PROTECTION OF LOW CARBON STEEL IN ACIDIC MEDIUM

2019 ◽  
Vol 27 (06) ◽  
pp. 1950154 ◽  
Author(s):  
ILL-MIN CHUNG ◽  
VENKATESAN HEMAPRIYA ◽  
PONNUSAMY KANCHANA ◽  
NATARAJAN ARUNADEVI ◽  
SUBRAMANIAN CHITRA ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Low Carbon Steel ◽  
Steel Corrosion ◽  
Low Carbon ◽  
Green Inhibitor ◽  
Surface Protection ◽  
Langmuir Adsorption ◽  
Phytochemical Components

Eco-friendly biodegradable Rhododendron schlippenbachii (R. schlippenbachii) green inhibitors, R. schlippenbachii methanolic (RSMeOH) extract, which can effectively reduce low carbon steel corrosion rate, were investigated using weight-loss and electrochemical (electrochemical impedance spectroscopy) techniques. The inhibitors exhibited higher efficiency by retarding the corrosion process in 1[Formula: see text]M H2SO4 and the inhibition efficiency is found to be concentration dependent. The reactivity of the predominant phytochemical components of the extract are analyzed. The adsorption of inhibitors on low carbon steel is followed the Langmuir adsorption. The protective inhibitor film formed on the metal surface was confirmed by SEM and AFM techniques.

SYNTHESIS OF CORROSION INHIBITORS WITH THE USE OF BANANA STEM EXTRACTS (MUSA ACUMINATA)

2020 ◽  
Vol 5 (2) ◽  
pp. 9-16
Author(s):  
K.F. Oyedeko ◽  
◽  
HEPHIZIBAH Olaniyi
Keyword(s):  
Carbon Steel ◽  
Steel Surface ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Low Carbon Steel ◽  
Musa Acuminata ◽  
Inhibition Mechanism ◽  
Low Carbon ◽  
Green Inhibitors ◽  
Carbon Steel Surface

Corrosion inhibitors are vital in industry for protection and prevention of surfaces from corrosion attack. There is need to have green inhibitors that are environmentally friendly and not hazardous to use. Extract from stem of banana (Musa species: Musa-Acuminata) was considered as green inhibitors. Extracts from the stem of banana was subjected to physico-chemical, phytochemical screening and corrosion test using gravimetric measurement with a low carbon steel flat bar coupon. The corrosion inhibition mechanism of the plant extract on the low carbon steel surface in 1M HCl and H2SO4 acid at different temperatures (30 to 60oC) showed that the inhibition efficiency (IE) increased with increase in concentration of the inhibitor (15ml to 75ml) but decreased with increase in temperature (303K to 333K) for the inhibitors throughout the test period, indicating a physisorption of extract on the carbon steel surface. The adsorption on the low carbon steel surface agrees with the Langmuir adsorption isotherm. The inhibition efficiency of the extract was above 50% in both media with banana extract having 69.55% inhibition efficiency in H2SO4 solution

scholarly journals Corrosion Inhibition of Low-Carbon Steel by Hydrophobic Organosilicon Dispersions

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1269
Author(s):  
Yuri Makarychev ◽  
Natalia Gladkikh ◽  
Ivan Arkhipushkin ◽  
Yuri Kuznetsov
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Photoelectron Spectroscopy ◽  
Corrosion Inhibitors ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
X Ray ◽  
Micelle Core ◽  
Hydrophobic Solvent ◽  
Polymer Type

This article proposes a method for obtaining stable hydrophobic inhibitor dispersions, where the micelle core contains a hydrophobic solvent, a corrosion inhibitor and an organosilane. Such compositions can be used as polymer-type corrosion inhibitors for low-carbon steel. Using electrochemical methods, corrosion tests and X-ray photoelectron spectroscopy, features of the formation of polymeric layers of hydrophobic organosilicon dispersions were studied.

scholarly journals Kinerja kalium metavanadat sebagai inhibitor korosi baja karbon rendah dalam lingkungan klorida dan sulfida

2018 ◽  
Vol 7 (3) ◽  
pp. 828
Author(s):  
Isdiriayani Nurdin ◽  
R Asri Pratiwi ◽  
Aditya Farhan A ◽  
Fikri Anggara P ◽  
Rennie Sari
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Corrosion Inhibitor ◽  
Low Carbon Steel ◽  
Chloride Concentration ◽  
Steel Corrosion ◽  
Low Carbon ◽  
Cyclic Voltammetry Method ◽  
The Common ◽  
Chloride Environment

Inhibitor addition is one of the common corrosion control methods. Potassium metavanadate (KVO3) is the common corrosion inhibitor for Benfield solution in CO2 absorber. Former research shows that KVO3 is also able to inhibit the corrosion in seawater containing Sulphate Reducing Bacteria (SRB) due to its capacity as biocide. Chloride and Sulfide are common corrosive ions found in process fluids in industries. Therefore, this research is carried out to study the performance of KVO3 as a corrosion inhibitor for low- carbon steel in chloride and sulfide contaminated environment. The objective of this research was achieved by measuring low-carbon steel corrosion rate in various concentrations of contaminants. The corrosion rate was measured by Tafel method. The corrosion inhibition mechanisms were studied using cyclic voltammetry method. Meanwhile the corrosion products were identified by X - ray diffraction spectrometry (XRD). This research results that KVO3 is an effective corrosion inhibitor in chloride environment when the chloride concentration ranges between 20 g/L and 30 g/L. In this range of concentration, KVO3 performs more than 99% efficiency. While in sulfide environment, KVO3 is an ineffective corrosion inhibitor. On the other hand, the addition of KVO3 reduces the corrosion rate of carbon steel in seawater containing sulfide, although its performance does not meet the effective inhibitor criteria. Higher concentration of sulfide results the higher inhibition efficiency of KVO3.Keywords: Potassium metavanadate, low - carbon steel, corrosion inhibitor AbstrakPenambahan inhibitor merupakan salah satu metode pengendalian korosi. Kalium metavanadat (KVO3) sering digunakan sebagai inhibitor korosi pada absorber CO2 yang menggunakan larutan Benfield. Hasil penelitian sebelumnya menunjukkan bahwa KVO3 mampu menginhibisi korosi baja karbon rendah dalam air laut yang mengandung bakteri pereduksi sulfat (SRB) dengan bertindak sebagai biosida. Klorida dan sulfida merupakan ion-ion korosif yang umum ditemui dalam fluida proses di industri. Penelitian ini dilakukan untuk mempelajari kinerja KVO3 sebagai inhibitor korosi baja karbon rendah dalam lingkungan akuatik yang terkontaminasi klorida, ataupun sulfida. Untuk mencapai tujuan tersebut dilakukan pengukuran laju korosi baja karbon rendah dengan jenis dan konsentrasi kontaminan bervariasi. Pengukuran laju korosi dilakukan dengan metode Tafel. Mekanisme inhibisi diprediksi dengan metode voltametri siklik. Sedangkan produk korosi diidentifikasi dengan menggunakan spektrometri difraksi sinar X (XRD). Dari penelitian ini, diperoleh hasil bahwa KVO3 efektif sebagai inhibitor korosi baja karbon rendah pada lingkungan klorida berkonsentrasi antara 20 g/L hingga 30 g/L dengan efisiensi di atas 99%. Pada lingkungan sulfida, KVO3 kurang efektif menginhibisi korosi baja karbon rendah. Sedangkan pada air laut sintetik yang mengandung sulfida, walaupun belum termasuk kategori inhibitor efektif, namun KVO3 dapat menurunkan laju korosi baja karbon dengan efisiensi inhibisi yang meningkat seiring dengan kenaikan konsentrasi sulfida.Kata kunci: kalium metavanadat, baja karbon rendah, inhibitor korosi

Comparative Study of Palm Oil and Corn Oil as Corrosion Inhibitor for Low Carbon Steel

2016 ◽  
Vol 706 ◽  
pp. 9-15 ◽  
Author(s):  
Nadhirah A. Khalim ◽  
Esah Hamzah
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Palm Oil ◽  
Inhibition Efficiency ◽  
Corn Oil ◽  
Low Carbon Steel ◽  
Immersion Test ◽  
Distilled Water ◽  
Low Carbon ◽  
Green Inhibitor

Corrosion can lead to failures in plant infrastructure and machines which are usually costly to repair, contaminating the product and causes environmental damage. Green inhibitor is a corrosion inhibitor which normally comes from the extract of plants and can inhibit corrosion by using chemisorption and/or physisorption mechanism on the metal surface or reacting with metal ions and forming a barrier-type precipitate on its surface. This paper discusses the corrosion inhibition of low carbon steel by addition of palm oil and corn oil as green inhibitors. We also compared the effect of these inhibitors in water and salt water environment. The corrosion behaviour of the low carbon steel was determined by immersion and electrochemical tests. The immersion test was carried out by immersing the samples in distilled water and 3.5% NaCl solution with and without the inhibitors for 1,2,4,6 and 8 weeks. The concentration of the inhibitors used was 100 g/L for both corn oil and palm oil. Scanning Electron Microscopy, Energy Dispersive Spectroscopy and X-Ray diffractometer were used to analyse the results. Immersion test results show that there is a slight weight gain for low carbon steel immersed in the presence of inhibitors suggesting that there is a thin protective layer formed which act as a barrier towards corrosion. Corn oil inhibitor in distilled water shows the highest inhibition efficiency. Its inhibition efficiency is 93.9%, which is slightly higher than palm oil (91.5%) in similar environment.

Evaluation of 1‐Hexadecylbenzimidazole as a Corrosion Inhibitor on Low Carbon Steel 15 % HCl Solution Interface

2021 ◽  
Vol 6 (13) ◽  
pp. 3199-3217
Author(s):  
Nurudeen A. Odewunmi ◽  
Mohammad A. J. Mazumder ◽  
Shaikh A. Ali
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Solution Interface ◽  
Hcl Solution
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