Influence of Nonoxynol-9 on the Corrosion Inhibition of Carbon Steel in 1.0 M Hydrochloric Acid Solution

2016 ◽  
Vol 230 (11) ◽  
Author(s):  
Sayed S. Abd El-Rehim ◽  
Mohamed Abdel Moneim Deyab ◽  
Hamdy H. Hassan ◽  
Ahamed Abdel Aziz Ibrahim
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Metal Surface ◽  
Electrochemical Impedance ◽  
Inhibition Mechanism ◽  
Physical Interaction ◽  
Chemical Calculation ◽  
Surface Polarization ◽  
Different Temperatures ◽  
Capacitive Loop

AbstractThe inhibitory performance of nonoxynol-9 (N9) as a corrosion inhibitor for carbon steel was evaluated in 1.0 M HCl solution at different temperatures. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and quantum chemical calculation methods were used in this study. The results indicated that the corrosion rate decreased with increasing concentration of N9 up 150 ppm and decreased with the increase in temperature of the medium. The comparison between the results obtained by polarization and EIS methods showed a good agreement. The corrosion inhibition effect of N9 could be related to the adsorption of N9 molecules on the metal surface. Polarization curves indicated that N9 behaves as a mixed type inhibitor. EIS exhibited one capacitive loop which indicates that the corrosion reaction is controlled by charge transfer process. The inhibition mechanism of N9 involves physical interaction between the inhibitor and metal surface. The adsorption of N9 on carbon steel affords physisorption process and obeyed the Langmuir adsorption isotherm.

Influence of phytic acid on the corrosion behavior of carbon steel with different surface treatments

2018 ◽  
Vol 65 (6) ◽  
pp. 658-667 ◽  
Author(s):  
Yingjun Zhang ◽  
Baojie Dou ◽  
Yawei Shao ◽  
Xue-Jun Cui ◽  
Yanqiu Wang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Surface Condition ◽  
Energy Dispersive Spectrometer ◽  
Surface Treatments ◽  
Inhibition Mechanism ◽  
Content Type

Purpose This paper aim to investigate the influence of PA on the corrosion behavior of carbon steel with blast cleaned or pre-rusted treatments, and interpret the inhibition mechanism of PA on the steel with different surface treatments. Design/methodology/approach The influence of PA on the corrosion behavior of blast cleaned or rusty steel was investigated by means of electrochemical impedance spectroscopy (EIS). The EIS data were analyzed using the @ZsimpWin commercial software. The morphology and component of steel after immersion were characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), Fourier transformation infrared (FTIR) and X-ray diffractometer (XRD). Findings EIS analysis results indicated that PA had good corrosion inhibition for blast cleaned or rusty steel. SEM, EDS, FTIR and XRD further indicated that PA had two main corrosion inhibition processes for the corrosion inhibition of blast cleaned or rusty steel: corrosion dissolution and formation of protective barrier layers. Originality/value Most published works focus the attention only toward the effect of corrosion inhibitor for the clean metal surfaces. However, the surface condition of metal sometimes is unsatisfactory in the practical application of corrosion inhibitor, such as existing residual rust. Some studies also have shown that several corrosion inhibitors could be applied on partially rusted substrates. These inhibitors mainly include tannins and phosphoric acid, but not PA. Therefore, the authors investigated the influence of PA on the corrosion behavior of carbon steel with blast cleaned or pre-rusted treatments in this paper.

scholarly journals Experimental and Theoretical Study on the Synergistic Inhibition Effect of Pyridine Derivatives and Sulfur-Containing Compounds on the Corrosion of Carbon Steel in CO2-Saturated 3.5 wt.% NaCl Solution

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3270 ◽  
Author(s):  
Junlei Tang ◽  
Yuxin Hu ◽  
Zhongzhi Han ◽  
Hu Wang ◽  
Yuanqiang Zhu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Electrochemical Impedance ◽  
Inhibition Mechanism ◽  
Pyridine Derivative ◽  
Pyridine Derivatives ◽  
Nacl Solution ◽  
Molar Ratios ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

The corrosion inhibition performance of pyridine derivatives (4-methylpyridine and its quaternary ammonium salts) and sulfur-containing compounds (thiourea and mercaptoethanol) with different molar ratios on carbon steel in CO2-saturated 3.5 wt.% NaCl solution was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning electron microscopy. The synergistic corrosion inhibition mechanism of mixed inhibitors was elucidated by the theoretical calculation and simulation. The molecules of pyridine derivative compounds with a larger volume has priority to adsorb on the metal surface, while the molecules of sulfur-containing compounds with a smaller volume fill in vacancies. A dense adsorption film would be formed when 4-PQ and sulfur-containing compounds are added at a proper mole ratio.

scholarly journals Inhibition of Corrosion of Carbon Steel in 3.5% NaCl Solution byMyrmecodia PendansExtract

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Atria Pradityana ◽  
Sulistijono ◽  
Abdullah Shahab ◽  
Lukman Noerochim ◽  
Diah Susanti
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Corrosion Inhibitor ◽  
Organic Compounds ◽  
Metal Surface ◽  
Electrochemical Impedance ◽  
Inhibition Mechanism ◽  
Nacl Solution ◽  
Corrosive Media ◽  
Corrosion Medium

Inhibitor is a substance that is added to the corrosive media to inhibit corrosion rate. Organic inhibitors are preferred to inorganic ones since they are environmentally friendly. One of the organic compounds which is rarely reported as a corrosion inhibitor isMyrmecodia Pendans. The organic compounds can be adsorbed on the metal surface and block the active surface to reduce the rate of corrosion. In this study, the used pipe was carbon steel API 5L Grade B with 3.5% NaCl solution as the corrosion medium. The objective of this research was to analyze the inhibition mechanismMyrmecodia Pendanstowards carbon steel in a corrosion medium. Concentration variations of extractMyrmecodia Pendanswere 0–500 ppm. Fourier Transform Infrared (FTIR) was used for chemical characterization ofMyrmecodia Pendans. Polarization and Electrochemical Impedance Spectroscopy (EIS) were used to measure the corrosion rate and behaviour. From the electrochemical measurements, it was found that the addition of 400 mg/L inhibitor gave the highest inhibition efficiency.Myrmecodia Pendansacted as a corrosion inhibitor by forming a thin layer on the metal surface.

A study on the effect of new prepared amide cationic amphipathic on the corrosion inhibition of API N80 steel pipelines in oil wells industries

2018 ◽  
Vol 65 (2) ◽  
pp. 197-209 ◽  
Author(s):  
Samy Shaban ◽  
Abd Elaziz Fouda ◽  
Mohamed Elmorsi ◽  
Tarek Fayed ◽  
Omar Azazy
Keyword(s):  
Corrosion Inhibition ◽  
Density Functional ◽  
Electrochemical Impedance ◽  
Simple Method ◽  
Content Type ◽  
N80 Steel ◽  
Different Temperatures ◽  
Capacitive Loop ◽  
C 30 ◽  
C 50

Purpose The purpose of this study is to inspect the corrosion inhibition of API N80 steel pipelines in uninhibited solution and inhibited with a synthesized surfactant compound [N-(3-(dimethyl octyl ammonio) propyl) palmitamide bromide] (DMDPP), which is prepared through a simple and applicable method. Design/methodology/approach Weight loss was inspected at five different temperatures of 25°C, 30°C, 40°C, 50°C and 60°C Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation were used at room temperature. Density functional theory was used to study the relation between the molecular structure and inhibition theoretically. Findings Adsorption of the prepared DMDPP fits the Langmuir isotherm model. The inhibition efficiency of the prepared DMDPP amphipathic inhibitor is directly proportional to temperature increase. Polarization results reveal that the investigated DMDPP amphipathic compound behaves as a mixed-type inhibitor. EIS spectra produced one individual capacitive loop. Originality/value The originality is the preparation of cationic surfactants through a simple method, which can be used as corrosion inhibitors in oil production. The synthesized inhibitors were prepared from low-price materials. The work studied the behavior of the synthesized surfactants in inhibiting the corrosion of the steel in an acidic medium. Electrochemical and theoretical studies were presented, besides gravimetric and surface examination.

scholarly journals Experimental and theoretical study on the synergistic inhibition effect of yridine derivatives and sulfur-containing compounds on the corrosion of carbon steel in CO2-saturated 3.5 wt.% NaCl solution

2018 ◽  
Author(s):  
Junlei Tang ◽  
Yuxin Hu ◽  
Zhongzhi Han ◽  
Hu Wang ◽  
Yuanqiang Zhu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Electrochemical Impedance ◽  
Inhibition Mechanism ◽  
Pyridine Derivatives ◽  
Nacl Solution ◽  
Molar Ratios ◽  
Inhibition Performance ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

The corrosion inhibition performance of pyridine derivatives (4-methylpyridine and its quaternary ammonium salts) and sulfur-containing compounds (thiourea and mercaptoethanol) with different molar ratios on carbon steel in CO2-saturated 3.5 wt.% NaCl solution was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy and scanning electron microscopy. The synergistic corrosion inhibition mechanism of mixed inhibitors was elucidated by the theoretical calculation and simulation. The molecule of pyridine derivatives compound with larger volume has the priority to adsorb on the metal surface, while the molecules of sulfur-containing compounds with smaller volume fill in vacancies. A dense adsorption film would be formed when 4-PQ and sulfur-containing compounds are added at a proper mole ratio.

Synergistic Effect of Lysozyme and Vitamin B1 on the Corrosion Inhibition of Carbon Steel in Sulphuric Acid

2012 ◽  
Vol 463-464 ◽  
pp. 895-899 ◽  
Author(s):  
Feng Wang ◽  
Xuan De Ji ◽  
Xin Lu Liu
Keyword(s):  
Carbon Steel ◽  
Synergistic Effect ◽  
Sulphuric Acid ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
High Efficiency ◽  
Electrochemical Impedance ◽  
Effective Means ◽  
Vitamin B1 ◽  
Inhibition Mechanism

In recent years more attention is paid to high-efficiency and nontoxic corrosion inhibitor. Synergistic inhibition is an effective means to improve the inhibitive force of inhibitor. The aim of this work is to attempt to find out inhibition mechanism and synergistic effect of Lysozyme (LYZ) and vitamin B1 (VB1) and to diversify the application of inhibitor in acidic medium. The corrosion inhibition effect of LYZ and VB1 for carbon steel specimens in 0.5 mol•L-1 sulphuric acid solution have been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The obtained results show that carbon steel is more efficiently protected by the mixture of lysozyme and vitamin B1 (LYZ-VB1) than LYZ or VB1. By potentiodynamic polarization method, the highest inhibition efficiencies of 89.5% and 80.04% are observed with single LYZ or VB1, respectively, and an improved inhibition efficiency of 94.2% is obtained with LYZ-VB1 at 25°C.

The synergistic effect of 2-mercaptobenzotiazole and zinc nitrate as corrosion inhibitor on carbon steel in saline solution

2020 ◽  
Vol 111 (10) ◽  
pp. 863-871
Author(s):  
Hamze Foratirad ◽  
Majid Golabadi ◽  
Masoud Asgari ◽  
Mohammad Ghasem Gholami ◽  
Meysam Karimi
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Electrochemical Impedance ◽  
Synergistic Effects ◽  
Steel Substrate ◽  
Electrochemical Techniques ◽  
Corrosion Current ◽  
Zinc Nitrate ◽  
Inhibition Mechanism ◽  
Anodic Current Density

Abstract In this study, the synergistic effects of 2-mercaptobenzotiazole molecules and zinc nitrate on the corrosion behavior of carbon steel were investigated using electrochemical techniques in 3.5% NaCl solution. The experimental results revealed that combination of 2-mercaptobenzoimidazole (MBT) and zinc nitrate with ratio of 100 ppm : 100 ppm, resulted in the least corrosion current (1.03 lA cm-2) and the highest corrosion inhibition efficiency. Polarization results showed that the inhibition mechanism of inhibitor was mixed-type (anodic and cathodic mechanism) corrosion inhibition which was predominantly influenced by a reduction in dissolution rate of the substrate (decrease in anodic current density). Electrochemical impedance spectroscopy analysis yielded more accurate results about the formation mechanism and stability of the inhibitor film over prolonged time. The precipitation of chelate from inhibitor molecules and zinc cations on steel surface was found to be the main mechanism for increasing the corrosion resistance of steel substrate.

scholarly journals Combined Experimental and Theoretical Insights into the Corrosion Inhibition Activity on Carbon Steel Iron of Phosphonic Acids

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 135
Author(s):  
Aurelia Visa ◽  
Nicoleta Plesu ◽  
Bianca Maranescu ◽  
Gheorghe Ilia ◽  
Ana Borota ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Density Functional ◽  
Energy Gap ◽  
Electrochemical Impedance ◽  
Charge Transfer Resistance ◽  
Phosphonic Acids ◽  
Transfer Resistance ◽  
Potential Map ◽  
Chlorine Ions

The inhibition effect of N,N′-phosphonomethylglycine (PMG) and vinyl phosphonic acid (VPA) on the 3% NaCl acidic solution corrosion of carbon steel iron was studied at different immersion times by potentiodynamic polarization, electrochemical impedance spectroscopy, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and computational methods. It is found from the polarization studies that PMG and VPA behave as mixed-type inhibitors in NaCl. Values of charge transfer resistance (Rct) and double layer capacitance (Cdl) in the absence and presence of inhibitors are determined. The PMG and VPA inhibitors were capable of inhibiting the corrosion process up to ≈91% and ≈85%, respectively. In the presence of PMG, the synergic effect of chlorine ions was observed. Density functional theory (DFT) was engaged to establish the adsorption site of PMG, VPA, and their deprotonated states. For studied compounds, the resulted values of ELUMO, EHOMO, energy gap (∆E), dipole moment (μ), electronic hardness (η), global softness (σ), electrophilic index (ω), and the electronic potential map are in concordance with the experimental data results regarding their corrosion inhibition behavior and adsorption on the metal surface.

Corrosion Inhibition of N,N- diethylammonium O,O′- di (p-chlorophenyl) dithiophosphate for Carbon Steel in HCL Solution

2013 ◽  
Vol 781-784 ◽  
pp. 299-303
Author(s):  
Shu Lan Cai ◽  
Kang Quan Qiao ◽  
Fa Mei Feng
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Mixed Type ◽  
Electrochemical Impedance ◽  
Equivalent Circuit Model ◽  
Inhibition Effect ◽  
Inhibition Process ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

A new corrosion inhibior N,N-diethylammonium O,O-di (p-chlorophenyl) dithiophosphate (EDPDP) has been synthesized and its inhibition effect towards the corrosion of carbon steel in 1.0 molL-1 HCl solution at 25 °C has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The obtained results show that EDPDP is a excellent inhibitor and the inhibition efficiencies exceed 90 %. The polarization measurements reveal that EDPDP is a mixed type inhibitor and the equivalent circuit model of the corrosion inhibition process is obtained by the analysis of EIS data.

scholarly journals Investigation of the corrosion inhibition of carbon steel in hydrochloric acid solution by using ginger roots extract

RSC Advances ◽  
2017 ◽  
Vol 7 (40) ◽  
pp. 24576-24588 ◽  
Author(s):  
H. S. Gadow ◽  
M. M. Motawea
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Corrosion Inhibition ◽  
Hydrochloric Acid Solution ◽  
Adsorption Behavior ◽  
Different Temperatures ◽  
Hcl Solution

The inhibitive effect and adsorption behavior of ginger roots extract (GRE) on the corrosion of carbon steel in 1.0 M HCl solution at different temperatures were investigated.

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