کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
191947 459731 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of the variational patterns for corrosion kinetics of carbon steel as a function of dissolved oxygen and NaCl concentration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Study of the variational patterns for corrosion kinetics of carbon steel as a function of dissolved oxygen and NaCl concentration
چکیده انگلیسی

The simultaneous occurrences of electrochemical reactions responsible for corrosion of carbon steel in NaCl solutions have been analyzed on the basis of the mixed potential theory in order to determine the combined effect of dissolved oxygen and NaCl concentration on corrosion potential, corrosion current density and hydrogen evolution. This was achieved through the estimation of the functional dependence from both, the dissolved oxygen and the NaCl concentration for each of the kinetic parameters involved in the corrosion process. The main finding is the existence of the critical dissolved oxygen value at which a notorious change in variational pattern for corrosion potential, corrosion current density and hydrogen evolution is observed. The validity of this feature is supported from experimental evidence reported in previous investigations. In this context the role of pitting corrosion, oxide film and diffusional effects are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 54, Issue 28, 1 December 2009, Pages 7435–7443
نویسندگان
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