scholarly journals Different Setup of Capacitive Coupling Protection System on Mild Steel

2021 ◽  
Vol 2080 (1) ◽  
pp. 012024
Author(s):  
Wan Mohd Haqqi Wan Ahmad ◽  
Siti Hawa Mohamed Salleh ◽  
Shaiful Rizam Shamsudin ◽  
Rajaselan wardan ◽  
Mohd Subhi Din Yati ◽  
...  
Keyword(s):  
Weight Loss ◽  
Surface Morphology ◽  
Mild Steel ◽  
Corrosion Protection ◽  
Steel Surface ◽  
Electrical Current ◽  
Capacitive Coupling ◽  
Current Consumption ◽  
Current Voltage ◽  
Experimental Surface

Abstract A Capacitive Coupling Corrosion Protection (CCCP) technology based on coupler pads was investigated. The layout of the coupler pads on the mild steel surface was studied to get the best outdoor corrosion protection. A square wave of current/voltage is supplied to the steel surface for 72 hours via a copper coupler pad in three arrangements, i.e., single, double-sided, and opposite configurations. The efficiency of the CCCP configuration was assessed by measuring electrical current consumption, weight loss, and post-experimental surface morphology observations. It is found that the current consumption of 600 μA/cm2 in the double-sided configuration is practically stable. The lowest weight loss and clean surface morphology also prove that the double-sided configuration can improve the corrosion protection of mild steel. It was discovered that by employing more coupling pads on both sides of the metal sheet, the excessive positive charge capable of producing oxidation of mild steel could be easily discharged.

Neem Leaf Extract as a Corrosion Inhibitor on Mild Steel in Acidic Solution

2018 ◽  
Vol 35 ◽  
pp. 208-220 ◽  
Author(s):  
Akindele Okewale ◽  
Felix Omoruwuo
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Leaf Extract ◽  
Steel Surface ◽  
Adsorption Mechanism ◽  
Mild Steel Surface ◽  
Freundlich Isotherms ◽  
Weight Loss Method ◽  
Neem Leaf Extract

The influence of neem leaf extract on corrosion inhibition of mild steel in 0.1 M HCl solution was studied using the weight loss method. Neem leaf extract which contains the double bond, carbonyl groups, and aromatic rings functional group as shown by the GCMS, phytochemical test, and FTIR analyses is one of the good natural plant extract that can be used as corrosion inhibitor. The weight loss on surface of mild steel at various inhibitor concentrations was determined. The highest inhibition efficiency of 93.24% was achieved using the neem leaf extract as corrosion inhibitor. Adsorption mechanism was investigated using Langmuir, Temkin, and Freundlich isotherms. Inhibitor adherence on the mild steel surface was spontaneous with the negative Gibb’s free energy value obtained. The mixed type adsorption mechanism (physisorption and chemisorption) is proposed for the inhibitor adsorption on mild steel surface. The inhibitor was adsorbed on the mild steel surface through adsorption of the phytochemical components on the surface of mild steel which protects the metal surface from corroding. The corrosion rate decreases from 0.001 to 0.0002MPY with increase in inhibitor concentrations and exposure time.

scholarly journals 1-Butyl-3-Methylimidazolium Chloride Ionic Liquid as Inhibitor for Corrosion Protection of Mild Steel in Acidic Media

2019 ◽  
Vol 7 (4.14) ◽  
pp. 146
Author(s):  
A A. Ahmad Tarmizi ◽  
L Peter ◽  
D Ahtoi ◽  
R Yusof ◽  
S N.A. Syed Ismail ◽  
...  
Keyword(s):  
Weight Loss ◽  
Ionic Liquid ◽  
Mild Steel ◽  
Sulphuric Acid ◽  
Corrosion Protection ◽  
Corrosion Performance ◽  
Weight Loss Measurement ◽  
Scanning Electronic Microscopy ◽  
Acidic Media ◽  
Loss Measurement

Corrosion inhibitor is a substance added to the corrosive environment in small quantities to reduce the corrosion a metal. The addition of inhibitors will reduce the corrosion rate of the metal by retarding the corrosion process on the metal surface. Thus, this study focused on the study of the effectiveness of 1- butyl-3-methylimidazolium chloride ([EMIM]Cl) ionic liquid as an inhibitor for corrosion protection of mild steel. Two different concentrations of [EMIM]Cl (0.05 M and 0.5 M) were tested into different concentrations of sulphuric acid (0.05M, 0.10 M, 0.15 M, 0.20 M and 0.25 M). Weight loss measurement was used to determine the effectiveness of the [EMIM]Cl as inhibitor for corrosion protection. Results showed that acid concentrations play an important role for the corrosion protection process in the presence of the inhibitor. The weight loss increases as the concentration of the acid increased. The study also revealed that the concentrations of [EMIM]Cl ionic liquid effect the performance of the inhibitor. From this study, 0.5 M of [EMIM]Cl ionic liquid shows better corrosion performance compared to 0.05 M of [EMIM]Cl. At 0.25 M of sulphuric acid, the weight loss of untreated metal increased drastically from 0.0075 g at 0.5 hour to 0.0974 g at 24 hours. After treated with 0.5 M of [EMIM]Cl, the weight loss measurement slightly increased from 0.0027 g at 0.5 hour to 0.0179 g at 24 hours. This weight loss value is lower compared to mild steel treated with 0.05 M [EMIM]Cl which is 0.0469 g at 24 hours. The performance of the inhibitor in two different type of acid was also investigated. The morphology of the untreated mild steel and mild steel treated with [EMIM]Cl was investigated by scanning electronic microscopy (SEM)  

Musa Sapientum (Banana) Peels as Green Corrosion Inhibitor for Mild Steel

2019 ◽  
Vol 797 ◽  
pp. 230-239 ◽  
Author(s):  
Nor Roslina Rosli ◽  
Suriatie Mat Yusuf ◽  
Arina Sauki ◽  
Wan Muhamad Razlan Wan Razali
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Gas Chromatography Mass Spectrometry ◽  
Banana Peel ◽  
Musa Sapientum ◽  
Peel Extract

The inhibition efficiency of Musa sapientum (banana) peel extracts at different concentrations and temperatures on mild steel corrosion in acidic solution of 1 M hydrochloric acid (HCl) were investigated by using weight loss method. The banana peel extract concentrations were tested from 300 to 500 ppm at temperature range between 25°C to 60°C. The performance of banana peel extract as an inhibitor was found compatible in the tested solution. The corrosion rates, which were calculated from the weight loss data, showed that the inhibition efficiency of the extract increased from 86.9% to 89.0% as the concentration of banana peel extract increased from 300 ppm to 500 ppm. It was also observed that the inhibition efficiency decreased as the temperature was increased from 25°C to 60°C. Characterization of the peel extract by using gas chromatography-mass spectrometry (GC-MS) has detected the presence of bioactive compounds which are responsible for the corrosion inhibition and adsorption properties on mild steel surface. Eleven major compounds have been identified as having corrosion inhibition properties. FTIR analysis confirmed the presence of functional groups of alcohols, alkanes, carbonyls, aromatics, ethers, and esters that can prevent corrosion by adsorption on steel surface.

Novel Compounds of Imidazole Derivatives as Effective Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution

2020 ◽  
pp. 132-155
Author(s):  
Moussa Ouakki ◽  
M. Galai ◽  
Z. Aribou ◽  
M. Rbaa ◽  
B. Lakhrissi ◽  
...  
Keyword(s):  
Weight Loss ◽  
Acid Solution ◽  
Mild Steel ◽  
Steel Surface ◽  
Langmuir Adsorption Isotherm ◽  
Electrochemical Tests ◽  
Imidazole Derivatives ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance

The inhibition performance of two imidazole derivatives, IM-Cl and IM-CH3, on the corrosion behavior of MS in 1M HCl acid solution was studied through weight loss method and electrochemical tests. The results obtained from the electrochemical methods show that inhibition efficiency increases with the increase of inhibitors concentration. The adsorption of inhibitors on the mild steel surface obeys Langmuir adsorption isotherm. The corrosion protection was once also investigated with the aid of UV–Vis spectrophotometry. SEM-EDX was performed and discussed for surface study of uninhibited and inhibited mild steel samples.

An Effect of Layer on Surface Morphology TiO[sub 2] Nanocoating Deposited on Mild Steel Surface

2011 ◽  
Author(s):  
Mohd Faizal Bin Achoi ◽  
Asiah Mohd Nor ◽  
Saifollah Abdullah ◽  
Mohamad Rusop Mahmood ◽  
Abdul Manaf Hashim ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Mild Steel ◽  
Steel Surface ◽  
Mild Steel Surface

Surface Morphology of Acrylate/Carbon Nanotubes Nanocomposites on Mild Steel

2015 ◽  
Vol 1109 ◽  
pp. 451-455
Author(s):  
Muhammad Rashid Mahmud ◽  
M.S. Shamsudin ◽  
Muzammil Mat Akhir ◽  
Mohamad Kamal Harun ◽  
Mohamad Rusop ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Surface Morphology ◽  
Mild Steel ◽  
Field Emission ◽  
Steel Surface ◽  
Sol Gel ◽  
Mild Steel Surface ◽  
Scanning Electron

Acrylate/carbon nanotubes nanocomposites were prepared using sol-gel method. Carbon nanotubes with different percentage (0.2%, 0.4%, 0.6%, 0.8% and 1.0%) incorporated into acrylate and deposited on mild steel. Surface of acrylate/carbon nanotubes composites were characterized using by field emission scanning electron microscope (FESEM). Carbon nanotubes uniformly distributed in acrylate observed by FESEM shows increase in percentage of carbon nanotubes blend with acrylate the peak distribution become decreases.

scholarly journals Insights into Corrosion Inhibition Behavior of a 5-Mercapto-1, 2, 4-Triazole Derivative for Mild Steel in Hydrochloric Acid Solution: Experimental and DFT Studies

Lubricants ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 122
Author(s):  
Israa Abd Alkadir Aziz ◽  
Iman Adnan Annon ◽  
Makarim H. Abdulkareem ◽  
Mahdi M. Hanoon ◽  
Mohammed H. Alkaabi ◽  
...  
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Molecular Orbital ◽  
Corrosion Protection ◽  
Hydrochloric Acid Solution ◽  
Steel Surface ◽  
Energy Gap ◽  
Frontier Molecular Orbital ◽  
Mild Steel Surface

A triazole heterocyclic compound namely 3-(4-ethyl-5-mercapto-1, 2, 4-triazol-3-yl)-1-phenylpropanone (EMTP) was examined for its corrosion protection of mild steel (MS) against 1 M hydrochloric acid medium using gravimetric techniques. EMTP exhibited excellent corrosion protection performance at low and high concentrations towards MS in HCl solution. Comparison of corrosion protection performance of EMTP and its parent triazole and temperature effects of on inhibition efficacy were also studied. EMTP has potential corrosion inhibitor for mild steel in 1.0 M hydrochloric acid solution with the highest protection efficacy of 97% at 303 K. The weight loss findings implied that EMTP protects the metal surface corrosion through the creation of a protective layer at the surface mild steel–corrosive solution interface. The inhibitive efficacy increases with the increase of inhibitor concentration and decreases with increased temperature. The adsorption of EMTP on the surface of MS follows Langmuir’s adsorption isotherm process. DFT method was conducted on EMTP molecule to calculate the quantum chemical parameters and to determine the relationship between the molecular structure of EMTP and protection performance. The molecular parameters, such as energy gap and frontier molecular orbital (highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO)), and the absolute electronegativity (χ) value from inhibitor molecules to unoccupied d-orbital of iron atoms on the mild steel surface were also determined and correlated with protection efficiency. The theoretical findings revealed that the protection performance of EMTP increased with the increase in HOMO energy, and the nitrogen, oxygen and sulfur atoms are most probable positions for bonding through giving electrons to the d-orbital of iron atoms on the mild steel surface.

scholarly journals Lepidagathis alopecuroides methanol extract as corrosion inhibitor for mild steel in HCl

2021 ◽  
Vol 32 (1) ◽  
pp. 22-27
Author(s):  
Gloria I. Ndukwe ◽  
Habibat F. Chahul ◽  
Godwin Oodo
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Plant Extract ◽  
Linear Polarization ◽  
Steel Surface ◽  
Inhibition Efficiency ◽  
Methanol Extract ◽  
Activation Parameters ◽  
Aerial Parts

Abstract We report on the preliminary phytochemical screening of the methanolic extract of the aerial parts of Lepidagathis alopecuroides and its evaluation as a potential corrosion inhibitor for mild steel in aerated 1.0 M HCl by weight loss and linear polarization measurements. Weight loss measurements were conducted at 303, 313, 323 and 333 K. The results showed that L. alopecuroides inhibited the corrosion of mild steel in the acid solution with inhibition efficiency increasing with increase in the concentrations of the plant extract but decreased with increase in temperature. Linear polarization plots showed the plant extract to inhibit both the dissolution of the steel at the anode and the hydrogen evolution reaction (HER) at the cathode making it a mixed inhibitor. Temkin adsorption isotherms best modeled the adsorption of L. alopecuroides extract on the steel surface. From the values of the evaluated kinetic activation parameters in the study, the mechanism of physisorption is proposed for the adsorption of the plant extract on the steel surface.

The Action Mechanisms of BIMGCS12-3 as Corrosion Inhibitor of Mild Steel for Vitriolic Acid Pickling

2011 ◽  
Vol 337 ◽  
pp. 785-788
Author(s):  
Yong Ming Sun
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Mixed Type ◽  
Steel Surface ◽  
Ammonium Bromide ◽  
Morphological Examination ◽  
Acid Pickling ◽  
Action Mechanisms ◽  
Mixed Type Inhibitor

Propanediyl-α, ω-bis-(N-dodecyl benzimidazole ammonium bromide), (abbreviated as BIMGCS12-3), was tested as inhibitor for the corrosion of mild steel in 1M H2SO4. It was found by weight loss technique that prepared inhibitor adsorbed on mild steel surface forming a protecting film. Polarization curves show that BIMGCS12-3 acts as mixed type inhibitor. Moreover, surface morphological examination has been carried out by SEM.

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