Document Details

Document Type : Article In Journal 
Document Title :
SYNERGISM AND ANTAGONISM IN IRON BASE METALLIC GLASS CORROSION INHIBITION BY THIOSEMICARBAZONE COMPOUNDS AND BROMIDE IONS
التآزر والحفز في تسبيط تآكل سبيكة الحديد زجاجية الخواص بواسطة مركبات الثيوسمي كاربازون وأيون البروميد
 
Document Language : English 
Abstract : The synergistic and antagonism action caused by Br ions on the corrosion inhibition of Fc78B13Si9 glassy alloy in 0.2 M Na2SO4 in absence and presence 10-4 M of some thiosemicarbazone derivatives have been investigated using potentiodynamic polarization, a.c. impedance techniques and morphological study. Results show that the addition of Br ions to sulphate solution inhibit the corrosion process by acting as an electron transfer barrier due to direct adsorption of these ions on alloy surface. A synergistic effect exists when fixed concentration of studied thiosemicarbazone derivatives and low concentrations of Br ions are used together to prevent glassy alloy corrosion in Na2SO4. The increase in surface coverage values in the presence at low concentrations of Br ions indicates that an insoluble complex formed by undergoing joint adsorption. The synergism parameter (S_θ) is defined and calculated by surface coverage values. The parameter in the case of small amount of Br found to be more than unity, indicating that the enhanced inhibition efficiency caused by the addition of Br ions is only due to synergism and there is a definite contribution from the inhibitor molecule. 
ISSN : 1012-1319 
Journal Name : Science Journal 
Volume : 10 
Issue Number : 1 
Publishing Year : 1426 AH
2006 AD 
Article Type : Article 
Added Date : Tuesday, July 24, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
سناء طاهر عربArab, Sanaa TaherInvestigatorDoctoratedr.s.arab@hotmail.com
خديجة م عمرانEmran, Khadija MResearcherDoctoratek_imran2000sa@yahoo.com

Files

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 34005.pdf pdfAbstract
 34149.pdf pdfملخص البحث

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