INHIBITIVE EFFECT OFL–OHON THE CORROSION OF AUSTENITIC CHROMIUM–NICKEL STEEL INH2SO4SOLUTION

S. M. A. Hosseini (), M. Amiri and A. Momeni
Additional contact information
S. M. A. Hosseini: Department of Chemistry, Shahid Bahonar University of Kerman, Kerman76169, Iran
M. Amiri: Department of Chemistry, Shahid Bahonar University of Kerman, Kerman76169, Iran
A. Momeni: Department of Chemistry, Shahid Bahonar University of Kerman, Kerman76169, Iran

Surface Review and Letters (SRL), 2008, vol. 15, issue 04, 435-442

Abstract: The corrosion behavior of the austenitic chromium–nickel steel in different concentrations (0.001, 0.002, 0.005, and 0.01 M) of dimethyl 2-(2–hydroxy phenyl amino)-3-(triphenyl phosphoranilidin) butane dioate (L–OH) in 0.5 MH2SO4was investigated by potentiostatic polarization measurements. The effect of concentration and temperature on inhibition properties was determined. It was found that the presence ofL–OHreduces markedly the corrosion rate of steel in the acid solution. The inhibition efficiency increases as theL–OHconcentration is increased. Maximum inhibition efficiency (95%) was obtained for alloy in acid solution containing 0.01 M ofL–OH. Thermodynamic parameters for adsorption ofL–OHare calculated. It was found that the inhibitor is adsorbed on the steel surface and the experimental results are in agreement with Timken's isotherm. Negative values of the free energy of adsorption were obtained indicating the spontaneity of adsorption process. Scanning electron microscopy was done from the surface of exposed sample indicating uniform film on the surface of the alloy.

Keywords: Corrosion; inhibitor; steel; L–OH; isotherm (search for similar items in EconPapers)
Date: 2008
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X08011561
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:15:y:2008:i:04:n:s0218625x08011561

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X08011561

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().