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Sanaa Taher Saeed Arab
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 Type
Dr Grade
Email
عيشة محمود التركستاني
AL-TURKUSTANI, Aisha Mahmmod
Investigator
Doctorate
A.M.Turkustani@hotmail.com
سناء طاهر عرب
Arab, Sanaa Taher
Researcher
Doctorate
dr.s.arab@hotmail.com
ليلى سعيد القرني
Al-QARN, Layah Saeed
Researcher
Doctorate
Files
File Name
Type
Description
34024.pdf
pdf
Abstract
36778.pdf
pdf
Scientific Research
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