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.

scholarly journals Inhibition of Mild Steel Corrosion by 3-Benzoylmethyl Benzimidazolium Hexafluoroantimonate in Acidic Solution

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Ayssar Nahlé ◽  
Ideisan I. Abu-Abdoun ◽  
Ibrahim Abdel-Rahman
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Thermodynamic Parameters ◽  
Phenyl Ring ◽  
Acidic Solution ◽  
Steel Corrosion ◽  
Effect Of Temperature ◽  
Mild Steel Corrosion ◽  
Hcl Solution

The corrosion inhibition of mild steel in 1 M HCl solution by a synthesized compound (3-benzoylmethyl benzimidazolium hexafluoroantimonate) was investigated electrochemically and by weight loss experiments. The concentration of this inhibitor ranged from5 ×10-7 M to5×10-4 M. The effect of temperature (from 303 to 343 K) and concentrations (from5×10-7 M to5×10-4 M) were investigated. The percentage inhibition increased with the increase of the concentration of the inhibitor and reached about 98% at the concentration of5×10-4 M at 303 K. The percentage inhibition decreased with the increase of temperature. The thermodynamic parameters for the adsorption of this inhibitor on the metal surface were calculated. This compound was found to be a very good corrosion inhibitor due to the presence of nitrogen in benzimidazole and phenyl ring.

scholarly journals UAE Neem Extract as a Corrosion Inhibitor for Carbon Steel in HCl Solution

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Ayssar Nahlé ◽  
Ideisan Abu-Abdoun ◽  
Ibrahim Abdel-Rahman ◽  
Maysoon Al-Khayat
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Adsorption Isotherm ◽  
Corrosion Inhibitor ◽  
Room Temperature ◽  
Tannin Content ◽  
Neem Extract ◽  
Neem Leaves ◽  
Temkin Adsorption Isotherm ◽  
Hcl Solution

The effect of aqueous extract of UAE Neem (Azadirachta Indica) on the corrosion inhibition of carbon steel in 1.0 M HCl solution was investigated electrochemically, and by weight-loss experiments at temperatures ranging from 303 to 343 K. The percentage inhibition increased with the increase of the concentration of the inhibitor. At a concentration of 2.0 g/L, the percentage inhibition reached about 87% at room temperature and 80% at 303 K. The percentage inhibition decreased with the increase of temperature. The thermodynamic parameters for the adsorption of this inhibitor on the metal surface were calculated using the Temkin adsorption isotherm. The aqueous Neem leaves extract was found to be an excellent potential corrosion inhibitor because of the high content of tannin content as well as the presence of a series of complex triterpene glycosides.

scholarly journals New Corrosion Inhibitor Derived from Coumarin

2017 ◽  
Author(s):  
Ahmed Al-Amiery
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Weight Loss ◽  
Fourier Transform ◽  
Magnetic Resonance ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Damage Reduction ◽  
Weight Loss Method ◽  
Loss Method ◽  
Hcl Solution

New corrosion inhibitor derived from coumarin-3-amine namely 3-((2-chlorobenzylidene)amino)coumarin was synthesized and characterized by CHN elemental analysis in addition to Fourier transform infrared and nuclear magnetic resonance techniques. The anti-corrosion ability of 3-((2-chlorobenzylidene)amino)coumarin to inhibit the impacts of corrosion has been demonstrated and damage reduction of the mild steel also. 3-((2-chlorobenzylidene)amino)coumarin, has been employed as a good corrosion inhibitor for mild steel in HCL solution. The efficiency of the inhibition was figured according to weight loss method and it was 74.6%.

Experimental and theoretical studies of hydralazine hydrochloride as corrosion inhibitor for mild steel in HCl acid medium

2015 ◽  
Vol 63 (1) ◽  
pp. 47-55 ◽  
Author(s):  
B.M. Prasanna ◽  
B.M. Praveen ◽  
Narayana Hebbar ◽  
T.V. Venkatesha
Keyword(s):  
Weight Loss ◽  
Adsorption Isotherm ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Active Sites ◽  
Inhibition Efficiency ◽  
Content Type ◽  
Inhibition Effect ◽  
Different Temperatures ◽  
Hydralazine Hydrochloride

Purpose – The purpose of this paper is to investigate the inhibition effect of hydralazine hydrochloride as a corrosion inhibitor for mild steel in 1M HCl. The inhibition effect was studied at different temperatures, ranging from 303 to 333°K. Design/methodology/approach – The inhibition efficiency of hydralazine hydrochloride was analyzed using weight loss, Tafel polarization, electrochemical impedance spectroscopy and surface morphology methods. The effect of temperature on the corrosion behavior of mild steel in 1M HCl was studied and discussed using an adsorption isotherm and activation parameters. Findings – Weight loss, polarization and impedance showed that the inhibition efficiency increases with an increase in the concentration of hydralazine hydrochloride for mild steel in 1M HCl. The inhibitive action may be attributed to the adsorption of the inhibitor molecule on the active sites of the metal surface by the Langmuir adsorption isotherm. Polarization curves indicated that hydralazine hydrochloride acts as a mixed-type inhibitor. Scanning electron microscopy was performed on inhibited and uninhibited mild steel samples to characterize the surface. Thermodynamic parameter indicated that the adsorption of hydralazine hydrochloride is a spontaneous process and the adsorption occurs chemically. Originality/value – The inhibition effect of hydralazine hydrochloride for mild steel has been investigated at different temperatures, ranging from 303 to 333°K. Hydralazine hydrochloride was a good inhibitor at a higher temperature.

scholarly journals Corrosion Inhibition of Mild-Steel in (1M) HCl using Spands Reagent

2017 ◽  
Vol 13 (1) ◽  
pp. 5915-5922
Author(s):  
Ala' a. A. Hussain
Keyword(s):  
Weight Loss ◽  
Mild Steel ◽  
Temperature Effect ◽  
Mixed Type ◽  
Inhibition Efficiency ◽  
Effect Of Temperature ◽  
Standing Time ◽  
Galvanostatic Polarization ◽  
Increasing Temperature ◽  
Hcl Solution

The effect of Spands Reagent on the dissolution of Mild-steel in  1M HCl  solution was studied using weight loss and galvanostatic polarization techniques. The inhibition efficiency of inhibitor increases with concentration to attain (75.26%) at concentration  1×10-2 M ,and standing time for 180 min at 25°C. Temperature effect on the corrosion behavior was studied at temperature range from 25-45°C, the results showed that inhibition efficiency decreased with increasing temperature to attain (64.53%) at concentration 1×10-2  M at 45°C and with standing time equal to 180 min. The effect of temperature on the rate of corrosion in the absence and presence of   Spands Reagent was also studied. The Kinetic Parameters were calculated and discussed. The polarization curves revealed that the studied inhibitor represent a mixed–type inhibitors. Adsorption of inhibitor was isotherm physisorption type.

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