scholarly journals EFFECT OF TEMPERATURE IN CORROSION RATE OF MILD STEEL IN ACID MEDIA IN PRESENCE OF ACACIA SENEGAL EXTRACT

2020 ◽  
Vol 9 (2) ◽  
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
Effect Of Temperature ◽  
Acacia Senegal ◽  
Acid Media

scholarly journals Study of PlantCordia Dichotomaas Green Corrosion Inhibitor for Mild Steel in Different Acid Media

2011 ◽  
Vol 8 (3) ◽  
pp. 1200-1205 ◽  
Author(s):  
R. Khandelwal ◽  
S. K. Arora ◽  
S. P. Mathur
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
Mass Loss ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Toxic Chemicals ◽  
Fruit Extract ◽  
Acid Media ◽  
Green Corrosion Inhibitor ◽  
Dry Fruit

The corrosion inhibition of mild steel using extracts ofCordia dichotomain different acid media was investigated by mass loss and thermometric methods. The experiments were carried out at 299±0.2 K in presence of different concentrations of dry fruit, leaves and stem extracts ofCordia dichotoma. The results reveal that the alcoholic extracts ofCordia dichotomais a better corrosion inhibitor than that of toxic chemicals. The fruit extract is more potent than leaves and stem extracts to inhibit the corrosion rate. The study seeks to investigate the possibility of using extracts ofCordia dichotomaas a green corrosion inhibitor for mild steel.

scholarly journals Inhibition of the Corrosion of Mild Steel in Acid Media by Naturally Occurring Acacia Senegal

2010 ◽  
Vol 7 (4) ◽  
pp. 1220-1229 ◽  
Author(s):  
Urvija Garg ◽  
R. K. Tak
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Steel Corrosion ◽  
Alcoholic Extract ◽  
Acacia Senegal ◽  
Acid Media ◽  
Naturally Occurring ◽  
Mild Steel Corrosion ◽  
Hcl Solution

The inhibition of corrosion of mild steel in HCl solution by naturally occurringAcacia Senegalhas been studied in relation to the concentration of inhibitor and concentration of corrosive medium. It has been observed that theAcacia Senegalalcoholic extract acts as a good corrosion inhibitor in hydrochloric acid solution and the adsorption of the extract provides a good protection against mild steel corrosion.

scholarly journals Corrosion Inhibition of Mild Steel in 1 mol L−1 HCl Using Gum Exudates of Azadirachta indica

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Malarvizhi Manickam ◽  
Dheenadhayalan Sivakumar ◽  
Brindha Thirumalairaj ◽  
Mallika Jaganathan
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
Mass Loss ◽  
Azadirachta Indica ◽  
Mixed Mode ◽  
Immersion Time ◽  
Steel Surface ◽  
Effect Of Temperature ◽  
Langmuir Adsorption ◽  
Polarization Studies

The ability of gum exudates of Azadirachta indica (GAI) to inhibit corrosion on mild steel in 1 mol L−1 HCl has been studied using mass loss, polarization, and impedence measurements. The effect of temperature (303–323 K) and immersion time of 1, 2, 4, 6, and 12 hours on corrosion behavior of mild steel was examined. Gum exudates decrease the corrosion rate up to a concentration of 80 ppm and at 323 K temperature. GAI adsorb chemically onto the surface of the mild steel while it obeys Langmuir adsorption isotherms. Polarization studies show GAI as mixed mode inhibitor. Surface studies ascertain that a shielding layer was formed on the mild steel surface.

Inhibiting potential of hydroxypropyl methylcellulose on acid corrosion of mild steel and aluminium

2014 ◽  
Vol 43 (6) ◽  
pp. 394-404 ◽  
Author(s):  
I.O. Arukalam
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Acid Corrosion ◽  
Hydroxypropyl Methylcellulose ◽  
Acid Media ◽  
Content Type ◽  
Practical Applications ◽  
Corrosion Rates

Purpose The aim of this paper is to appraise the inhibiting potential of hydroxypropyl methylcellulose (HPMC) on the corrosion of mild steel and aluminium in sulphuric and hydrochloric acid solutions. Design/methodology/approach The effects of two different corrodents on the dissolution of mild steel and aluminium were examined. Corrosion rates were determined using the weight loss technique. Inhibition efficiency was estimated by comparing the corrosion rates in absence and presence of the additive. The kinetics and mechanism of HPMC adsorption were investigated by impedance study while the anodic and cathodic partial reactions were studied by polarization measurements. Findings The results reveal that corrosion rate of mild steel and aluminium decreased with addition of HPMC. The corrosion rate and inhibition efficiency were found to depend on the concentration of the inhibitor. The polarization data indicated that the inhibitor was of mixed-type, with predominant effect on the cathodic partial reaction. electrochemical impedance spectroscopy confirms that corrosion inhibition was by adsorption on the metal surface following Freundlich adsorption isotherm via physisorption mechanism. Originality/value Hydroxypropyl methylcellulose has been studied for the first time as an inhibitor of mild steel and aluminium corrosion and the results suggest that the inhibitor could find practical applications in corrosion control in HCl and H2SO4 acid media. The findings are particularly useful, considering the fact that HPMC is a good film former and viscosity enhancer which could also be used in paint formulation.

Adsorption and corrosion inhibition characteristics of two medicinal molecules

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Rate ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Half Life ◽  
Thermodynamic Data ◽  
Inhibition Efficiency ◽  
Gravimetric Method ◽  
Corrosive Environment ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition characteristics of two medicinal molecules phenylalanine and rutin on mild steel in 1.0M Hydrochloric acid were evaluated using gravimetric method. Corrosion inhibition efficiency of 83.78 and 90.40 % was obtained respectively after seven days. However, phenylalanine showed weak accumulative higher corrosion inhibition efficiency. The presence of both molecules in the corrosive environment reduced the corrosion rate constant and increased the material half-life. Thermodynamic data calculated suggests a spontaneous adsorption of the molecules on the mild steel’s surface.

scholarly journals Effect of Temperature on the Corrosion Inhibition of Trans-4-Hydroxy-4′-Stilbazole on Mild Steel in HCl Solution

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ayssar Nahlé ◽  
Ideisan I. Abu-Abdoun ◽  
Ibrahim Abdel-Rahman
Keyword(s):  
Weight Loss ◽  
Double Bond ◽  
Adsorption Isotherm ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Thermodynamic Parameters ◽  
The Other ◽  
Effect Of Temperature ◽  
Temkin Adsorption Isotherm ◽  
Hcl Solution

The inhibition and the effect of temperature and concentration of trans-4-hydroxy-4′-stilbazole on the corrosion of mild steel in 1 M HCl solution was investigated by weight loss experiments at temperatures ranging from 303 to 343 K. The studied inhibitor concentrations were between  M and  M. The percentage inhibition increased with the increase of the concentration of the inhibitor. The percentage inhibition reached about 94% at the concentration of  M and 303 K. On the other hand, the percentage inhibition decreased with the increase of temperature. Using the Temkin adsorption isotherm, the thermodynamic parameters for the adsorption of this inhibitor on the metal surface were calculated. Trans-4-hydroxy-4′-stilbazole was found to be a potential corrosion inhibitor since it contained not only nitrogen and oxygen, but also phenyl and pyridine rings that are joined together with a double bond (–C=C–) in conjugation with these rings.

The Influence of Leachate Water on Corrosion Rate of Mild Steel Plate

2021 ◽  
Vol 2 (2) ◽  
pp. 137
Author(s):  
Abdul Ghofur ◽  
Dhonie Adetya Rachman ◽  
Muhammad Mochtar Lutfi ◽  
Fathur Rahman
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
Direct Contact ◽  
Steel Plate ◽  
Ambient Air ◽  
Water Pipe ◽  
Contact Duration ◽  
First Case ◽  
Living Organisms ◽  
Leachate Water

<p class="02abstracttext">Leachate water from final waste landfill (Tempat Pembuangan Akhir, TPA) contains harmful substances for the environment and living organisms. Furthermore, the leachate water can deteriorate equipment buried near TPA, e.g. buried water pipe. This work investigated the corrosion rate of mild steel SPCC SD after immersion in leachate water of TPA Gunung Kupang and Cahaya Kencana located in South Kalimantan. The steel plate immersion into leachate water was worked out in 3 different cases. The first case was 2 weeks immersion in leachate water followed by 1 week contact with ambient air. In the second case, steel plate was immersed in leachate water for 1 week and then 2 weeks in direct contact with ambient air. The last one was steel plate immersion in leachate water for 3 weeks without any direct contact with ambient air. The investigation shows that longer contact duration between wet steel surface, after immersion in leachate water, with ambient air increases the corrosion rate. The investigation shows also that the corrosion rate due to leachate water from Gunung Kupang landfill is higher than that of Cahaya Kencana landfill. Corrosion rate for TPA Gunung Kupang case varies from 0.441 to 0.718 mmpy. Meanwhile, corrosion rate for TPA Cahaya Kencana varies from 0.131 to 0.495 mmpy. This is due to lower pH of leachate water from TPA Mount Kupang.</p>

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