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Sanaa Taher Saeed Arab
Document Details
Document Type
:
Article In Journal
Document Title
:
THE EFFECT OF TEMPERATURE ON THE INHIBITION OF THE ACID CORROSION OF MILD STEEL BY SOME SULFONIUM BROMIDE DERIVATIVES
تأثير درجة الحرارة على التثبط الحمضي لتأكل الحديد الصلب باستخدام بعض مشتقات بروميدات فينيل ثنائي ميثيل سلفونيوم.
Subject
:
Scientific Research
Document Language
:
English
Abstract
:
The effect of temperature in the range(20-60 ) °C on the performs of sulfonium bromides at a fixed concentration of each of them on mild steel corrosion in 2.ON H2SO4 , HCl of and H3PO4 acids solutions using chemical methods (HEM and MLM), was carried out. It was found that in 2.0N H2SO4 solution the corrosion of mild steel increases with rising temperature from 20°C to 60°C for all the studied compounds except compound F who give an increase in Inh.% with rising temperature. In 2.0N HCl and 2.0N H3PO4 solutions It was clear that for most compounds the Inh.% or acceleration of corrosion decreases with increasing temperature. A decrease in the corrosion rate or an increase in Inh.% with increasing temperature is occurred only in some compounds in all the three acids, when the temperature reached 50°C. The decrease in inhibition efficiency or in acceleration of corrosion with temperature indicates that most of these compound are physically adsorbed on the mild steel surface and it also indicates that the inhibited film formed on the metal surface is less protective in nature at higher temperatures. Desorption of the inhibitor molecules from the metal surface most probably occurs with faster rates at high temperatures. The values of apparent activation energy ∆Eapp of the dissolution of mild steel in 2.0N of the three acids in absence and presence of the studied compounds were calculated
ISSN
:
1012-1319
Journal Name
:
Science Journal
Volume
:
12
Issue Number
:
4
Publishing Year
:
1422 AH
2002 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
عيشة محمود التركستاني
AL-TURKUSTANI, Aisha Mahmmod
Researcher
Doctorate
A.M.Turkustani@hotmail.com
Files
File Name
Type
Description
33999.pdf
pdf
Abstract
34121.pdf
pdf
ملخص البحث
36788.pdf
pdf
Scientific Research
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