Document Details

Document Type : Thesis 
Document Title :
Corrosion and Corrosion Inhibition of Mild Steel in H2SO4 Solutions by Zizyphus Spina-Christi and The Effect of Addition of Chloride Ions
تآكل وتثبيط تآكل الصلب المطـاوع في محاليل حمض الكبريتيك باستخدام مستخلصات نبات السدر وتأثير إضافة أيونات الكلوريد
 
Subject : Steel 
Document Language : Arabic 
Abstract : The inhibitive effects of aqueous and alcoholic extracts of zizyphus Spina-Christi on the corrosion of steel in 1.0 M H2SO4 containing 10% EtOH have been studied by chemical measurements [hydrogen evolution and mass loss] and electrochemical measurements [ impedance (EIS) and polarization (PDP)]. The results showed that the inhibition efficiency increases with the increase of zizyphus Spina-Christi concentration, which act as mixed type inhibitor. The inhibitive effect of zizyphus Spina-Christi extracts were discussed in terms of their horizontal adsorption on the metal surface. The adsorption follows Langmuir adsorption isotherm. The addition of 0.01 M chloride ions enhances the inhibition efficiency of zizyphus Spina-Christi plant extracts. The effect of temperature in the rang (20-60)ºC on the performance of the aqueous and alcoholic extracts of zizyphus Spina-Christi at fixed concentrations ( 10.0% and 2.0%) of each them respectively and presence of chloride ions (0.01M) with studied extracts on steel corrosion in 1.0 M H2SO4 containing 10% EtOH was also carried out. The studied extracts show also good inhibition efficiency against the corrosion of steel in H2SO4 at high temperatures in absence and presence of chloride ions. 
Supervisor : Sanaa T. Arab 
Thesis Type : Master Thesis 
Publishing Year : 1430 AH
2009 AD 
Number Of Pages : 221 
Co-Supervisor : Aisha M. Al- Turkustani 
Added Date : Thursday, August 29, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
اريج علي الرحيليAl- Rheli, Areeg AliInvestigatorMaster 

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 35879.doc doc 

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