Document Details

Document Type : Article In Journal 
Document Title :
The use of Ruta chalepensi as corrosion inhibitor for steel corrosion in 2M sulphuric acid solution
استخدام نبات السذاب كمثبط لتآكل الصلب المطاوع في 2.0 مولار في حمض الكبريتيك
 
Subject : Scientific Research 
Document Language : English 
Abstract : The effect of addition of Ruta Chalepensi (RC) extracts (aqueous extract and alcoholic extract) on steel corrosion in 2.0 M H2SO4 containing 10% ethyl alcohol (EtOH) by chemical methods (hydrogen evolution (HE) and mass loss(ML)) and electrochemical (potentiodynamic polarization (PDP) and impedance (EIS)) methods. SEM was applied for surface morphology to confirm the obtained results. The results showed that when the concentration of the extracts is increased the corrosion rate of steel sample is decreased, which indicates that the inhibition of the corrosion takes place. The polarization results showed that the extracts of RC plant acts as mixed type inhibitors, they retarded both cathodic and anodic corrosion reactions. The electrochemical parameters (Ecorr., Icorr., bc and ba) and the inhibition percentages inh%. were calculated. Electrochemical impedance spectroscopy results showed that the corrosion and corrosion inhibition of steel occurred mainly by charge transfer. Also, the experimental results from chemical and electrochemical results agree with Langmuir isotherm. Values of equilibrium constant of adsorption Kads. and the standard free energy of adsorption ∆G°ads., for the extracts were also calculated. 
ISSN : 1012-1319 
Journal Name : Science Journal 
Volume : 26 
Issue Number : 2 
Publishing Year : 1431 AH
2010 AD 
Article Type : Article 
Added Date : Tuesday, July 24, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عيشة محمود التركستانيAL-TURKUSTANI, Aisha MahmmodInvestigatorDoctorateA.M.Turkustani@hotmail.com
سناء طاهر عربArab, Sanaa TaherResearcherDoctoratedr.s.arab@hotmail.com
ليلى سعيد القرنيAl-QARN, Layah SaeedResearcherDoctorate 

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 36778.pdf pdfScientific Research

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