Document Details

Document Type : Article In Journal 
Document Title :
Structural effects and mechanism of the inhibition of acid corrosion of steel by some dithiocarbamate derivatives
Structural effects and mechanism of the inhibition of acid corrosion of steel by some dithiocarbamate derivatives
 
Subject : Chemistry 
Document Language : English 
Abstract : The study of the inhibition efficiency of related dithiocarbamates was undertaken using gasometry, mass loss and potentio-dynamic polarization methods. The compounds studied have the general formula RR′NCSS-Na, where R = H, CH3 or C2H2 and R′ = CH3, C2H5, C4H7, or C6H5. The studies showed that the compounds act as good inhibitors for the acid dissolution of steel in 1M H2SO4. The protection efficiency of the mono-substituted compounds increases as the electron density at the functional group and the bulk of the substituents increase. Polarization measurements indicated that these compounds act as mixed-type inhibitors. This is interpreted to mean that the compounds retard the rate of hydrogen evolution on the metal by affecting the mechanism of the reaction. Additional evidence for a change over in mechanism was also obtained from temperature studies of the inhibition process at five temperatures ranging from 30-50°C. It was observed that the enthalpy of activation increased by a factor of 2 to 3 in the presence of the inhibitors. In addition, the direction and sign of the entropy of activation supports the same principle. 
ISSN : 0010-9371 
Journal Name : Corrosion Prevention and Control 
Volume : 38 
Issue Number : 3 
Publishing Year : 1412 AH
1991 AD 
Article Type : Article 
Added Date : Monday, December 26, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
B A Abd El-NabeyEl-Nabey, B A AbdResearcherDoctorate 
عباس عباس العوضيEl-Awady, Abbas AResearcherDoctorateabbaselawady@hotmail.com
سعدالله قاري عزيزAziz, Saadullah GResearcherDoctoratesaziz@kau.edu.sa

Files

File NameTypeDescription
 31780.pdf pdfAbstract

Back To Researches Page