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.

The Influence of Adding Bio Inhibitor Sarang Semut (Myrmecodia pendans) to Carbon Steel API 5L Grade B in Solution of HCl 1 M

2015 ◽  
Vol 1123 ◽  
pp. 187-191 ◽  
Author(s):  
Atria Pradityana ◽  
Sulistijono ◽  
Abdullah Shahab
Keyword(s):  
Carbon Steel ◽  
Corrosion Rate ◽  
Electrochemical Impedance ◽  
Rapid Development ◽  
Inhibition Mechanism ◽  
Test Results ◽  
X Ray Diffraction ◽  
Corrosive Media ◽  
Concentrate Level ◽  
Control Corrosion

Inhibitor is generally known as one of many alternatives to control corrosion rate. These days, there is the rapid development in which finding inhibitor made from natural ingredient that is really eco-friendly. This research use type of sarang semut, Myrmecodia Pendans (MP), as bio inhibitor with concentrate level for about 0-500 mg/L and also using the material of carbon steel API 5L Grade B, and HCl 1 M as such corrosive media. The affectivity of bio inhibitor is generally known through such calibration which is called as Weight Loss, Potentiodynamic Polarization Test, Electrochemical Impedance Spectroscopy Test, and X-Ray Diffraction Test. The test results show that when it is added with bio inhibitor, there is the decreasing of corrosion rate from 109.88 mpy to 39.294 mpy in concentration level of 500 mg/L. Inhibition mechanism occurred is that there is the formation of a thin layer on the metal surface. Meanwhile, the XRD results show that there are compounds of Fe, FeCl3 and FeOCl in carbon steel API 5l Grade B.

Corrosion inhibition of some azole derivatives on carbon steel in hydrochloric acid solution

2014 ◽  
Vol 61 (5) ◽  
pp. 300-306 ◽  
Author(s):  
B.P. Markhali ◽  
R. Naderi ◽  
M. Sayebani ◽  
M. Mahdavian
Keyword(s):  
Carbon Steel ◽  
Hydrochloric Acid ◽  
Organic Compounds ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Acid Corrosion ◽  
Molecular Structures ◽  
Inhibition Mechanism ◽  
Content Type

Purpose – The purpose of this paper is investigate the inhibition efficiency of three similar bi-cyclic organic compounds, namely, benzimidazole (BI), benzotriazole (BTAH) and benzothiazole (BTH) on carbon steel in 1 M hydrochloric acid (HCl) solution. Organic inhibitors are widely used to protect metals in acidic media. Among abundant suggestions for acid corrosion inhibitors, azole compounds have gained attention. Design/methodology/approach – The inhibition efficiency of the three organic compounds was investigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Findings – Superiorities of BTH and BTAH corrosion inhibitors were shown by EIS data and polarization curves. Moreover, the results revealed that BTAH and BTH can function as effective mixed-type adsorptive inhibitors, whereas no inhibition behavior was observed for BI. Both BTAH and BTH obeyed Longmuir adsorption isotherm. The results obtained from this isotherm showed that both inhibitors adsorbed on the specimen surface physically and chemically. The difference in inhibition efficiencies of BTAH, BTH and BI was related to the presence of nitrogen and sulfur hetero atoms on their molecular structures. Originality/value – This study evaluated inhibition efficiency of BI, BTAH and BTH using electrochemical methods. In addition, the study attempted to find inhibition mechanism of the inhibitors and to find modes of adsorption of the inhibitors, correlating effects of heteroatoms and inhibition efficiency.

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.

The Use of Mixture of Piper Betle and Green Tea as a Green Corrosion Inhibitor for API X-52 Steel in Aerated 3.5 % NaCl Solution at Various Rotation Rates

2011 ◽  
Vol 383-390 ◽  
pp. 5418-5425 ◽  
Author(s):  
Andi Rustandi ◽  
Johny W. Soedarsono ◽  
Bambang Suharno
Keyword(s):  
Corrosion Rate ◽  
Turbulent Flow ◽  
Corrosion Inhibitor ◽  
Green Tea ◽  
Electrochemical Impedance ◽  
Reynold Number ◽  
Piper Betle ◽  
Nacl Solution ◽  
Warburg Impedance ◽  
Green Corrosion Inhibitor

Flow induced corrosion due to the presence of turbulent flow often occurs which causes severe internal thinning and promotes premature leakage. In practice, the common method for controlling such internal high corrosion rate is chemical injection using corrosion inhibitor such as amine based which utilizing adsorption or film forming mechanism. Unfortunately, the protection performance of such inhibitor might be less effective due to turbulent flow induced. The aim of this work is to study the use of mixture of piper betle and green tea as an alternative of green corrosion inhibitor (eco-friendly) to reduce the corrosion rate of API X-52 steel in aerated 3.5 % NaCl solution in turbulent flow condition whether high inhibitor efficiency can be achieved. The method of corrosion rate measurements was conducted using electrochemical polarization equipped with CMS100-Gamry Instruments and DC105 software as well as Rotating Cylinder Electrode (RCE) simulation. The mechanism of inhibition was also investigated using Electrochemical Impedance Spectroscopy (EIS) method with EIS300 software. The results showed that the addition of mixture of 1000 ppm piper betle and 4000 ppm green tea extracts with Reynold number ranging from 0 up to 30000 reduced the corrosion rates significantly with its approximately 90 % inhibitor efficiencies achieved. In addition, EIS spectra showed that in the absence of corrosion inhibitor, the Warburg impedance (diffusion controlled) was significantly attributed to the overall impedance but in the presence of corrosion inhibitor, capacitive impedance (charge transfer controlled) was mainly attributed to the overall impedance.

scholarly journals 3-Mercaptopropionic Acid as Corrosion Inhibitor for Carbon Steel in CO2 Aerated 1% NaCl Solution with Buffer Control-pH

Molekul ◽  
2018 ◽  
Vol 13 (2) ◽  
pp. 98
Author(s):  
Yayan Sunarya
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Adsorption Mechanism ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Surface Film ◽  
Nacl Solution ◽  
Mercaptopropionic Acid ◽  
Buffer Control ◽  
Percentage Inhibition Efficiency

In this research, 3-Mercaptopropionic acid (MPA) as corrosion inhibitor of carbon steel in CO2 aerated 1% NaCl solution with buffer pH adjustment has been studied by means of electrochemical impedance (EIS) and polarization (Tafel plot). MPA was found to be an effective carbon steel inhibitor. Percentage inhibition efficiency (IE %) calculated by both Tafel plot and EIS, ranged from 85% to 90%. MPA was found to affect the cathodic processes and act as cathodic-type inhibitors. Mechanism of inhibit corrosion by adsorption mechanism leads to the formation of a protective chemisorbed film on the metal surface film which suppresses the dissolution reaction and the hydrogen evolution reaction is activation controlled.

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.

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.

Inhibition Effects of Some Organic Compounds on Zinc Corrosion in 3.5% NaCl

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Viorel Branzoi ◽  
Alina Pruna ◽  
Florina Branzoi
Keyword(s):  
Organic Compounds ◽  
Electrochemical Impedance ◽  
Corrosion Process ◽  
Diffusion Control ◽  
Cathodic Reaction ◽  
Zinc Electrode ◽  
Electrochemical Studies ◽  
Nacl Solution ◽  
Sodium Dodecylsulphate ◽  
Zinc Corrosion

The inhibition of zinc corrosion in 3.5% NaCl solution by some organic compounds (sodium dodecylsulphate (SDS), sodium dodecylbenzosulphonate (SDBS) and sodium 1,4-bis(2-etylhexyl) sulphosuccinate (AOT)) was investigated. The inhibition efficiencies were determined by polarization measurements of the zinc electrode in the solution. Electrochemical impedance spectroscopy (EIS) was also used for electrochemical studies of zinc electrode in this medium. The results showed that the used surfactants inhibit the cathodic reaction of hydrogen evolution and at low anodic overvoltage the corrosion process is under activation control, while at high anodic overvoltage the process is under diffusion control.

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