کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1469700 | 990308 | 2011 | 10 صفحه PDF | دانلود رایگان |
Inhibitive performance of some synthesized thiophenol derivatives on corrosion behavior of mild steel in 0.1 M HCl solution was investigated by means of electrochemical techniques, quantum chemical and optical microscopy. The increase in concentration and immersion time shows a positive effect on inhibition efficiency while temperature has a negative effect. Inhibitor molecules directly adsorb at surface on the basis of donor–acceptor interactions between the π-electrons of benzene, sulfur and nitrogen atoms and the vacant d-orbitals of iron atoms. According to the thermodynamic parameters, present inhibitors adsorb physically. Optical microscopy examinations demonstrate a decrease in corrosion attacks in presence of inhibitors.
► Two synthesized organic compounds were experimentally and theoretically investigated.
► All investigated compounds showed physisorption on the surface.
► Trail of inhibitor efficiency with immersion time.
► Employing Gaussian DFT method for quantum chemical study of inhibitors.
Journal: Corrosion Science - Volume 53, Issue 10, October 2011, Pages 3058–3067