کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9783201 | 1511871 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inhibitory mechanism of mild steel corrosion in 2Â M sulphuric acid solution by methylene blue dye
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Methylene blue dye (MB) was investigated as a corrosion inhibitor for mild steel in 2Â M sulphuric acid solution using gravimetric and thermometric techniques. The inhibition efficiency of MB increased with concentration and synergistically increased in the presence of the halide additives, namely KCl, KBr and KI. The trend of inhibition efficiency with temperature suggests that inhibitor molecules are physically adsorbed on the corroding metal surface at lower concentration (0.01-0.5Â mM), and chemically adsorbed at higher concentration (1.0-5.0Â mM). These results were further corroborated by kinetic and activation parameters for corrosion and adsorption processes evaluated from experimental data at the temperatures studied. MB was found to obey Langmuir and Frumkin adsorption isotherms in the concentration range investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 89, Issues 2â3, 15 February 2005, Pages 305-311
Journal: Materials Chemistry and Physics - Volume 89, Issues 2â3, 15 February 2005, Pages 305-311
نویسندگان
E.E. Oguzie, G.N. Onuoha, A.I. Onuchukwu,