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Loto, Roland Tolulope, Popoola, Abimbola Patricia, Olaitan, Akanji Lukman. (1395). Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 7(2), 143-155. doi: https://doi.org/10.1007/s40090-015-0063-7
Roland Tolulope Loto; Abimbola Patricia Popoola; Akanji Lukman Olaitan. "Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 7, 2, 1395, 143-155. doi: https://doi.org/10.1007/s40090-015-0063-7
Loto, Roland Tolulope, Popoola, Abimbola Patricia, Olaitan, Akanji Lukman. (1395). 'Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 7(2), pp. 143-155. doi: https://doi.org/10.1007/s40090-015-0063-7
Loto, Roland Tolulope, Popoola, Abimbola Patricia, Olaitan, Akanji Lukman. Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1395; 7(2): 143-155. doi: https://doi.org/10.1007/s40090-015-0063-7

Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media

International Journal of Industrial Chemistry
دوره 7، شماره 2، شهریور 2016، صفحه 143-155
نوع مقاله: research article
شناسه دیجیتال (DOI): https://doi.org/10.1007/s40090-015-0063-7
نویسندگان
Roland Tolulope Loto* 1؛ Abimbola Patricia Popoola2؛ Akanji Lukman Olaitan2
1Department of Mechanical Engineering, Covenant University, Ota, Ogun, Nigeria
2Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South Africa
چکیده
Electrochemical studies of the synergistic effect of p-phenylenediamine and n,n diphenylthiourea (TPD) as corrosion inhibitor of mild steel in dilute sulphuric and hydrochloric acid through weight loss and potentiodynamic polarization at ambient temperature were performed. Experimental results showed the excellent performance of TPD with an optimal inhibition efficiency of 88.18 and 93.88 % in sulphuric and 87.42 and 87.15 % in hydrochloric acid from both tests at all concentration studied. Polarization studies show the compound to be a mixed-type inhibitor. Adsorption of deanol on the steel surface was observed to obey the Langmuir and Frumkin isotherm models. X-ray diffractometry confirmed the absence of corrosion products and complexes. Optical microscopy confirmed the selective inhibition property of TPD to be through chemical adsorption on the steel surface.
کلیدواژه‌ها
Corrosion؛ Inhibitor؛ Adsorption؛ Organic؛ Acid
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تعداد مشاهده مقاله: 14


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