scholarly journals Aizoon Extract As a Novel Eco-friendly Corrosion Inhibitor For Stainless Steel430 in HCl Solution

2021 ◽  
Author(s):  
Ahmed F. Molouk ◽  
Mohamed F. Atia ◽  
Abd El-Aziz S. Fouda
Keyword(s):  
Mixed Type ◽  
Electrochemical Impedance ◽  
Theoretical Data ◽  
Cathodic Reaction ◽  
Mass Reduction ◽  
Adsorption Model ◽  
Langmuir Adsorption ◽  
Langmuir Adsorption Model ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

Abstract Aizoon extract used as anti-corrosion for stainless steel430 (SS430) in 2M hydrochloric acid solution. The mass reduction, electrochemical impedance, and potentiodynamic polarization were carried out to demonstrate the performance of Aizoon extract as corrosion resistance for SS430. Polarization revealed that the Aizoon extract is mixed type inhibitor with superiority to inhibiting the cathodic reaction. The inhibition percentage reaches 93% at 300 ppm extract. Adsorption of the extract on SS430 surface is regular with Langmuir adsorption model. Thermodynamic factors for adsorption and activation processes for SS430 dissolution were estimated and discussed. Furthermore, the SS430 surface is characterized using different techniques. The surface morphology of SS430 was tested utilizing several techniques. The experimental data were supported by the theoretical data.

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 Evaluation of Corrosion Inhibition of Mild Steel in 1 M Hydrochloric Acid Solution byMollugo cerviana

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
P. Arockiasamy ◽  
X. Queen Rosary Sheela ◽  
G. Thenmozhi ◽  
M. Franco ◽  
J. Wilson Sahayaraj ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Plant Extract ◽  
Potentiodynamic Polarization ◽  
Electrochemical Impedance ◽  
Langmuir Adsorption ◽  
Inhibition Concentration ◽  
Corrosion Inhibition Efficiency ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

The inhibiting effect of methanolic extract ofMollugo cervianaplant on the corrosion of mild steel in 1 M HCl solution has been investigated by different techniques like potentiodynamic polarization, electrochemical impedance spectroscopy, and weight loss methods for five different concentrations of plant extract ranging from 25 to 1000 mg/L. The results indicated that the corrosion inhibition efficiency increased on increasing plant extract concentration till 500 mg/L and decreased on further increasing concentration. The extract was a mixed type inhibitor with the optimum inhibition concentration of 500 mg/L in potentiodynamic polarization. The adsorption of the plant extract on the mild steel surface was found to obey Langmuir adsorption isotherm. Surface analysis was also carried out to find out the surface morphology of the mild steel in the presence and in the absence of the inhibitor to find out its efficiency. The obtained results showed that theMollugo cervianaextract acts as a good inhibitor for the corrosion of mild steel in 1 M HCl solution.

scholarly journals Determination of the absolute CH4 adsorption using simplified local density theory and comparison with the modified Langmuir adsorption model

RSC Advances ◽  
2018 ◽  
Vol 8 (72) ◽  
pp. 41509-41516
Author(s):  
Yeyu Zhang ◽  
Shaonan Zhang ◽  
Zhicheng Wang ◽  
Hucheng Deng ◽  
Minghui Qi ◽  
...  
Keyword(s):  
Shale Gas ◽  
Local Density ◽  
Gas Storage ◽  
Adsorption Model ◽  
Gas Reservoirs ◽  
Methane Recovery ◽  
Langmuir Adsorption ◽  
Langmuir Adsorption Model ◽  
Ch4 Adsorption

Accurately determining the adsorbed amount of CH4 on shale is significant for understanding the mechanisms of shale gas storage and shale methane recovery from shale gas reservoirs.

Investigation of Ultrasonic Effects in Cotton Dyeing Processing

2013 ◽  
Vol 787 ◽  
pp. 138-142 ◽  
Author(s):  
De Shuai Sun ◽  
Long Fang ◽  
Tao Liu
Keyword(s):  
Cotton Fiber ◽  
Ultrasound Irradiation ◽  
Cotton Fabrics ◽  
Dye Uptake ◽  
Adsorption Model ◽  
Langmuir Adsorption ◽  
Langmuir Adsorption Model ◽  
Dyeing Process ◽  
Direct Dye ◽  
Ultrasound Dyeing

Ultrasound can promote the dye-uptake in the dyeing process. The effects of ultrasound on the fiber, dye and dyeing system were investigated by dyeing cotton fabrics with a direct dye. The dye exhaustion exceeded 80% in 30 minutes with the assistant of ultrasound. Langmuir adsorption model could descript the ultrasound dyeing process of direct dye. The area of fiber accessibility of cotton fiber increased 1.68 times under the action of ultrasound. The absorbance of direct dye solution increased remarkably in the first 10 minutes of ultrasound irradiation. Ultrasound accelerated the diffusion of dye on cotton fiber, and then the diffusion coefficient increased 46 times

scholarly journals A three-site Langmuir adsorption model to elucidate the temperature, pressure, and support dependence of the hydrogen coverage on supported Pt particles

2007 ◽  
Vol 245 (2) ◽  
pp. 415-427 ◽  
Author(s):  
Y JI ◽  
V KOOT ◽  
A VANDEREERDEN ◽  
B WECKHUYSEN ◽  
D KONINGSBERGER ◽  
...  
Keyword(s):  
Adsorption Model ◽  
Langmuir Adsorption ◽  
Langmuir Adsorption Model

scholarly journals Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
M. K. Pavithra ◽  
T. V. Venkatesha ◽  
M. K. Punith Kumar
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Protection Efficiency ◽  
Langmuir Adsorption ◽  
Kinetic And Thermodynamic Parameters ◽  
Mild Steel Corrosion ◽  
Acidic Chloride Solution ◽  
Acidic Chloride ◽  
Mixed Type Inhibitor

The corrosion inhibition effect of Rabeprazole sulfide (RS) on mild steel in 1 M hydrochloric acid (HCl) was investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and chronoamperometric measurements. Protection efficiency of RS increases with the concentration and decreases with the rise in temperature. Adsorption of RS on mild steel surface in 1 M HCl follows Langmuir adsorption isotherm. The kinetic and thermodynamic parameters governing the adsorption process were calculated and discussed. The polarization results suggest that RS performed as an excellent mixed-type inhibitor for mild steel corrosion in 1 M HCl.

Inhibition Effect of N-Octyl-2-Pyrrolidonium Chloride on the Corrosion of Mild Steel in Acidic Medium

2013 ◽  
Vol 634-638 ◽  
pp. 651-654
Author(s):  
Zi Chong Zhuang ◽  
Bao Hua Huang ◽  
Jun Liu ◽  
Yu Jing Lu ◽  
Zhan Chang Pan ◽  
...  
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Acidic Medium ◽  
Mixed Type ◽  
Inhibition Efficiency ◽  
Electrochemical Techniques ◽  
Inhibition Mechanism ◽  
Inhibition Effect ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

A new ionic liquid, N-octyl-2-pyrrolidonium chloride (NOPC), were synthesized and evaluated as inhibitors for mild steel (Q235) corrosion in 1 mol/L HCl. The adsorption behavior and corrosion inhibition mechanism of NOPC for mild steel in HCl solution were investigated by using weight loss measurements, electrochemical techniques, and SEM. The inhibition efficiency increases with the increasing concentration of NOPC in 1 mol/L HCl and decreases as the temperature increases. The results indicate that NOPC is able to function as a mixed type inhibitor.

scholarly journals Synergetic Effect between Phenolic Extracts of Ammi visnaga and Zea mays Formulation on the Corrosion of Mild Steel in 1 M HCl Solution

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Sarra Aourabi ◽  
Majid Driouch ◽  
Mariya Kadiri ◽  
Noura Achnine ◽  
Mouhcine Sfaira ◽  
...  
Keyword(s):  
Mild Steel ◽  
Steel Surface ◽  
Electrochemical Impedance ◽  
Synergetic Effect ◽  
Equivalent Circuit Model ◽  
Mild Steel Surface ◽  
Ammi Visnaga ◽  
Edx Analyses ◽  
Hcl Solution ◽  
Mixed Type Inhibitor

The synergetic effects between hydroethanolic extracts of A. visnaga HE (AV) and Z. mays hairs HE (ZM) on corrosion of mild steel in 1 M HCl solution was investigated at 298 K by two techniques: potentiodynamic polarization (PP) methods (Tafel and Stern & Geary) and electrochemical impedance spectroscopy (EIS). The mixture of HE (AV)/HE (ZM) acted as an efficient corrosion inhibitor and its inhibition efficiency increased with concentration up to 96.55% at 0.01 gL−1 HE (AV)/0.2 gL−1 HE (ZM). The polarization curves revealed that the mixture acted as a mixed-type inhibitor, with anodic predominant action. The EIS studies were fitted by the (Rs + CPEdl)/(Rct + CPEf/Rf) equivalent circuit model. The kinetic parameters were in favor of a physisorption character of adsorption of HE (AV)/HE (ZM) components onto the mild steel surface. The influence of exposure time on the efficiency of mixture extract was investigated. Scanning electron microscopy (SEM/EDX) analyses confirmed the formation of a protective adsorbed film upon the mild steel surface.

scholarly journals 3-Formylindole-4-aminobenzoic Acid: A Potential Corrosion Inhibitor for Mild Steel and Copper in Hydrochloric Acid Media

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Aby Paul ◽  
Joby Thomas K. ◽  
Vinod P. Raphael ◽  
K. S. Shaju
Keyword(s):  
Mild Steel ◽  
Electrochemical Impedance ◽  
Aminobenzoic Acid ◽  
Acid Media ◽  
Langmuir Adsorption ◽  
Low Concentrations ◽  
Polarization Studies ◽  
Hydrochloric Acid Media ◽  
Hcl Medium ◽  
Mixed Type Inhibitor

The corrosion inhibition efficiencies of Schiff base 3-formylindole-4-aminobenzoic acid (3FI4ABA) on mild steel (MS) and copper in 1.0 M HCl solution have been investigated using weight loss measurements, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization studies. The results show that inhibition efficiencies on both metals increase with increasing the concentration of the inhibitor. 3FI4ABA exhibited comparatively good inhibition towards mild steel in HCl medium even at low concentrations. The adsorption of inhibitor on the surfaces of the corroding metal mild steel and copper obeys the Langmuir isotherm. Polarization studies revealed that 3FI4ABA acts as a mixed-type inhibitor. Thermodynamic parameters (, ) were calculated using the Langmuir adsorption isotherm.

scholarly journals Corrosion Inhibition of Zinc Using Some Phenylthiazole Derivatives in Hydrochloric acid Solutions

2008 ◽  
Vol 4 (2) ◽  
pp. 425-440
Author(s):  
Abdel Aziz Fouda ◽  
A. Abdel Nazeerb ◽  
K.M.Abdel Khalek
Keyword(s):  
Weight Loss ◽  
Mixed Type ◽  
Electrochemical Impedance ◽  
Langmuir Adsorption Isotherm ◽  
Acid Solutions ◽  
Langmuir Adsorption ◽  
Hydrochloric Acid Solutions ◽  
Zinc Corrosion ◽  
Temperature Polarization ◽  
Inhibitive Action

The inhibitive action of some phenylthiazole derivatives namely: 2-acetylamino-5-p-bromophenylazo-4-phenylthiazole (BPT), 2-acetylamino-5-p-methylphenylazo-4-phenylthiazole (MPT), 2-acetylamino-5-p-methoxyphenylazo-4-phenylthiazole (XPT) and 2-acetylamino-5-p-nitrophenylazo-4-phenylthiazole (NPT), on zinc corrosion in 0.2 M HCl  has been studied using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS)and electrochemical frequency modulation (EFM) measurements. The results showed that the dissolution rate of zinc decreases with increasing the phenylthiazole derivatives concentration and decreases with raising temperature. Polarization curves indicated that the studied inhibitors act as mixed-type inhibitors. The adsorption of the investigated compounds follows Langmuir adsorption isotherm model. The thermodynamic parameters of adsorption and corrosion processes were determined and discussed. 

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