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العنوان
Supramolecular Compounds As Corrosion Inhibitors For Carbon Steel In Aqueous Solutions /
المؤلف
El-Waseef, Essam El-Sayed Ezz El-Din Mohamed.
هيئة الاعداد
باحث / عصام السيد عز الدين محمد الوصيف
مشرف / صفاء الدين حسن عطيو
مناقش / عبدالعزيز السيد فوده
مناقش / مديحه احمد شعيب
الموضوع
Chemistry.
تاريخ النشر
2022.
عدد الصفحات
158 p. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
Physical and Theoretical Chemistry
تاريخ الإجازة
16/8/2022
مكان الإجازة
جامعة طنطا - كلية العلوم * - Chemistry
الفهرس
Only 14 pages are availabe for public view

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Abstract

The objective of this study is to investigate the corrosion inhibition of carbon steel in 1M HCl solution by synthesized compounds. Mass loss (ML) investigated at five different temperatures 25-35-45oC, while potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) were tested at 25°C. The result showed that the synthesized inhibitor was good one and its protection efficiency (%η) was significantly increased by increasing both the dose and temperature. Polarization curve revealed that the studied inhibitor acts as mixed type of inhibitor. Adsorption of investigated inhibitor led to a reduction in the double layer capacitance and an increase in the charge transfer resistance. The adsorption of this inhibitor was found to obey henry adsorption model. The thermodynamic parameters were calculated and discussed that deduced the inhibitor produce thin film adsorbed in the surface of CS..