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Sanaa Taher Saeed Arab
Document Details
Document Type
:
Article In Journal
Document Title
:
Effect of temperature on corrosion inhibition of iron base metallic glass alloy in neutral solutions
تأثير درجة الحرارة على تثبيط تأكل سبيكة الحديد زجاجية الخواص في المحاليل المتعادلة
Subject
:
Scientific Research
Document Language
:
English
Abstract
:
Electrochemical measurements have been used to study the influence of temperature on corrosion and inhibitive effects of 4-methylacetophenone thiosemicarbazone and 4-methoxy acetophenone thiosemicarbazone on the corrosion of Fe78B13Si9 metallic glass in 0.2 M Na2SO4 between 293 and 333K. A good agreement between the data obtained by polarization and impedance measurements was found. Arise in temperature associated with an increase in icorr and 1/Rct values and decrease in the inhibition efficiency suggest a physical adsorption model for the corrosion processes. The results show that these compounds almost inhibit the iron-based glassy alloy corrosion at elevated temperatures. The difference in the inhibition behavior of the two compounds is explained in terms of the difference in the electron densities on the centers of adsorption in the thiosemicarbazone molecules. Thermodynamic parameters, ∆Eapp, ∆H*and ∆S*, have been calculated and are discussed.
ISSN
:
1012-1319
Journal Name
:
Science Journal
Volume
:
21
Issue Number
:
11
Publishing Year
:
1425 AH
2005 AD
Article Type
:
Article
Added Date
:
Monday, July 23, 2012
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
سناء طاهر عرب
Arab, Sanaa Taher
Investigator
Doctorate
dr.s.arab@hotmail.com
خديخة محمد عمران
Emran, Kadija Mohammad
Researcher
Doctorate
k_imran2000sa@yahoo.co.u
Files
File Name
Type
Description
34002.pdf
pdf
ملخص البحث
36866.pdf
pdf
البحث
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