کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1470066 1510041 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the alkyl chain length of 2 amino 5 alkyl 1,3,4 thiadiazole compounds on the corrosion inhibition of steel immersed in sulfuric acid solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Influence of the alkyl chain length of 2 amino 5 alkyl 1,3,4 thiadiazole compounds on the corrosion inhibition of steel immersed in sulfuric acid solutions
چکیده انگلیسی

The corrosion inhibition efficiency of 2 amino 5 alkyl 1,3,4 thiadiazole compounds with different alkyl chain lengths, namely: 2 ethyl, 3 n propyl, 5 n penthyl, 7 hepthyl, 11 undecyl and 13 tridecyl, was evaluated in the system steel/1 M H2SO4. These compounds were synthesized, characterized by FT-IR and NMR spectroscopy analysis and evaluated using electrochemical impedance spectroscopy and SEM analysis. The results showed that the inhibition mechanism involves blockage of the steel surface by the inhibitor molecules by a Langmuir-type adsorption process and that the alkyl chain length plays an important role in the inhibition efficiency of the synthesized inhibitors.


► API X52 steel corrosion in H2SO4 was evaluated with EIS.
► The corrosion inhibition efficiency of six thiadiazole compounds were evaluated.
► The alkyl chain length of these compounds was related to their corrosion IE.
► 2-Amino-5-undecyl-1,3,4-thiadiazole, IC-11, was the best inhibitor at 100 ppm.
► IC-11 corrosion inhibition lasted over 90% for at least 720 h.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 54, January 2012, Pages 231–243
نویسندگان
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