scholarly journals Corrosion Inhibition of Aluminium byCapparis deciduasin Acidic Media

2007 ◽  
Vol 4 (4) ◽  
pp. 450-456 ◽  
Author(s):  
P. Arora ◽  
S. Kumar ◽  
M. K. Sharma ◽  
S. P. Mathur
Keyword(s):  
Mass Loss ◽  
Corrosion Inhibition ◽  
Acidic Medium ◽  
Inhibition Efficiency ◽  
Ethanolic Extract ◽  
Acidic Media ◽  
Different Parts ◽  
Good Agreement

The inhibition efficiency of ethanolic extract of different parts ofCapparis deciduas(Ker) in acidic medium has been evaluated by mass loss and thermometric methods. Values of inhibition efficiency obtained from the two methods are in good agreement and are dependent upon the concentration of inhibitor and acid.

scholarly journals Corrosion Inhibition and Adsorption Properties of Ethanolic Extract of Calotropis for Corrosion of Aluminium in Acidic Media

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Sudesh Kumar ◽  
Suraj Prakash Mathur
Keyword(s):  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Ethanolic Extract ◽  
Plant Part ◽  
Calotropis Procera ◽  
Acidic Media ◽  
Plant Parts ◽  
Weight Loss Method ◽  
Acid Environment ◽  
Loss Method

The corrosion inhibition of aluminium in sulfuric acid solution in the presence of different plant parts, namely, leaves, latex, and fruit was studied using weight loss method and thermometric method. The ethanolic extracts of Calotropis procera and Calotropis gigantea act as an inhibitor in the acid environment. The inhibition efficiency increases with increase in inhibitor concentration. The plant parts inhibit aluminium, and inhibition is attributed, due to the adsorption of the plant part on the surface of aluminium.

scholarly journals A Comparative Study on the Corrosion Inhibition of Mild Steel and Aluminium by Synthesized Inhibitors in Organic Acidic Medium

2020 ◽  
pp. 41-51
Author(s):  
Lalita Saini ◽  
R. K. Upadhyay
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Acidic Medium ◽  
Trichloroacetic Acid ◽  
Inhibition Efficiency ◽  
Corrosion Inhibition Efficiency ◽  
Scanning Electron Microscope Method ◽  
Scanning Electron

Mass loss and Scanning Electron Microscope method (SEM) have been used to study the corrosion inhibition efficiency on mild steel and aluminium using synthesized inhibitors i.e. N-Benzylidene aniline (CI1) and N-Benzylidene 4-methylaniline (CI2) in Trichloroacetic acid (TCAA). Study reveals that both mild steel and aluminium are prone to corrosion in organic acid like TCAA. Out of these two metals, aluminium is more vigorously corroded by the TCAA in comparison to mild steel in same conditions and synthesized inhibitors CI1 and CI2 are almost same effective for mild steel and aluminium.

Corrosion inhibition action of Landolphia heudelotii on mild steel in acidic media

2020 ◽  
Vol 49 (5) ◽  
pp. 387-392
Author(s):  
Chinyere Elizabeth Agiriga ◽  
Emeka Oguzie ◽  
Arinzechukwu Chidiebere ◽  
Nnaemeka John Okorocha ◽  
Reginald Ndubuisi Chikwe
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Inhibition Efficiency ◽  
Elevated Temperatures ◽  
Construction Materials ◽  
Water Extract ◽  
Inhibition Mechanism ◽  
Acidic Media ◽  
Content Type

Purpose This paper aims to investigate the corrosion inhibition efficiency of Landolphia heudelotii (LH) on mild steel in 1 M HCl and 0.5 M H2SO4 using weight loss and potentiodynamic polarization techniques. Design/methodology/approach Water extract of LH was used as corrosion inhibitor on mild steel in acidic media at room temperature and elevated temperatures (30-60°C). Various concentrations of the plant extract were prepared from the stock solution obtained after solvent extraction. The inhibition efficiency of LH extract was evaluated and mechanism of adsorption was deduced. Findings LH extract showed significant corrosion inhibition on mild steel in both acidic media, with inhibition efficiency increasing with extract concentration. Potentiodynamic polarization measurements revealed mixed inhibition mechanism. Optimum inhibition efficiency was recorded at 2500 mg/L after 288 h. Mechanism of adsorption was mainly of physisorption. The inhibitor exhibited good inhibition efficiency even at elevated temperature. Research limitations/implications This study provides new data on the anticorrosion characteristics of LH extract under the specified conditions. Further studies could expand the experimental variables and use advanced surface probe techniques. Practical implications The developed inhibitor provides an alternative method of inhibiting corrosion on mild steel using eco-friendly materials from natural products which are less toxic, safer, cost-effective and readily available. Originality/value The method used was effective and the inhibitor developed can be incorporated in surface coatings where mild steel is used as construction materials, as tube sheets, rods and bars.

scholarly journals A Comparative Study of Inhibitive Effects of Some Schiff Bases on Mild Steel in Acidic Media by Mass Loss Techniques

2010 ◽  
Vol 7 (4) ◽  
pp. 1230-1237
Author(s):  
Abha Goyal ◽  
V. K. Swami ◽  
S. P. Mathur
Keyword(s):  
Comparative Study ◽  
Mild Steel ◽  
Mass Loss ◽  
Corrosion Inhibition ◽  
Schiff Bases ◽  
Maximum Efficiency ◽  
Acidic Media ◽  
Acidic Solutions

Mass loss techniques have been employed to study the corrosion inhibition of some newly synthesized Schiff bases.viz.N-4-(Diethyl amino) salicylidine-2-amino-5-chloropyridine (SB1),N-(4-ethylbenzalidine)-2-amino-5-chloropyridine (SB2),N-(4-ethylbenzalidine)-2-amino-5-bromopyridine (SB3),N-4-(Diethyl amino) salicylidine-2-amino-5-bromopyridine (SB4) for mild steel in HCl and H2SO4solutions. Results of inhibition efficiencies from the mass loss technique show that Schiff bases are good inhibitors in both the acidic solutions. Inhibition efficiencies increase with the increase in the concentration of acids as well as those of inhibitors. Maximum efficiency for H2SO4was found 99.78% and for HCl it was 97.92%.

scholarly journals Study of Corrosion Inhibition Potentials of Eichhornia crassipes Leaves Extract on Mild Steel in Acidic Medium using Artificial Neural Network

2015 ◽  
Vol 6 ◽  
pp. 158-167
Author(s):  
A Ashwe ◽  
K K Ikpambese
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Corrosion Behavior ◽  
Acidic Medium ◽  
Eichhornia Crassipes ◽  
Corrosion Behaviour ◽  
Ann Model ◽  
Acidic Media

Prediction of corrosion behavior of steel in acidic environments is an essential step towards optimizing the design of equipment in any industrial setting. An artificial neural network (ANN) may be used as a reliable modeling method for simulating and predicting the corrosion behaviour. The present study has been conducted to investigate the corrosion inhibition potentials of Eichhornia crassipes (water hyacinth) leaves extract for mild steel in acidic media and to establish an appropriate ANN model for predicting corrosion behavior of mild steel in H 2 SO 4 inhibited by Eichhornia crassipes. The experimental procedure employed weight loss method for corrosion rate measurements. Results have shown that Eichhornia crassipes is an effective inhibitor for corrosion inhibition of mild steel in acidic medium. A Levenberg-Marquardt (LM) ANN with single hidden layer having five neurons was employed to simulate the corrosion behaviour. The neural network was trained using the experimental corrosion database. Finally, validity of the proposed model was tested using standard statistical parameters. Results indicate that the trained ANN model is robust for predicting corrosion behaviour of mild steel in acidic media.

scholarly journals DFT, Monte Carlo and molecular dynamics simulations for the prediction of corrosion inhibition efficiency of novel pyrazolylnucleosides on Cu(111) surface in acidic media

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rachid Oukhrib ◽  
Youness Abdellaoui ◽  
Avni Berisha ◽  
Hicham Abou Oualid ◽  
Jeton Halili ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Monte Carlo ◽  
Molecular Dynamics Simulations ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Energy Gap ◽  
Chemical Hardness ◽  
Acidic Media ◽  
Corrosion Inhibition Efficiency ◽  
Dynamics Simulations

AbstractFive novel pyrazolylnucleosides have been evaluated theoretically for their corrosion inhibition efficiency on the Cu(111) surface in acidic media. DFT calculations were carried out to exhibit the intrinsic properties such as lowest unoccupied (ELUMO) and highest occupied (EHOMO) molecular orbital energies, as well as energy gap (∆E), chemical hardness (η), chemical softness (σ), electronegativity (χ), electrophilicity (ω) and nucleophilicity (ε). The theoretical FT-IR spectra were recorded to indicate the presence of the specific bonds in the studied molecules. The surface interactions between the inhibitor molecules and the metal surface were investigated using molecular dynamics simulations and Monte Carlo (MC) simulations. As a result, we have found that the inhibitor pyrazolylnucleosides 5a–e have strong interactions with Cu(111) surface, and therefore have excellent predictive inhibition power against copper corrosion.

Sign in / Sign up

Export Citation Format

Share Document