کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1470123 990318 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High corrosion resistance of austenitic stainless steel alloyed with nitrogen in an acid solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
High corrosion resistance of austenitic stainless steel alloyed with nitrogen in an acid solution
چکیده انگلیسی

Passivity of austenitic stainless steel containing nitrogen (ASS N25) was investigated in comparison with AISI 316L in deareated acid solution, pH 0.4. A peculiar nature of the passivation peak in a potentiodynamic curve and the kinetic parameters of formation and growth of the oxide film have been discussed. The electronic-semiconducting properties of the passive films have been correlated with their corrosion resistance. Alloying austenitic stainless steel with nitrogen increases its microstructure homogeneity and decreases the concentration of charge carriers, which beneficially affects the protecting and electronic properties of the passive oxide film.


► ASS alloyed with nitrogen treated at 1150 °C exhibits microstructure homogeneity.
► Passivation peak of ASS corresponds to oxidation of metal and absorbed hydrogen.
► Transfer phenomena and conductivity depend on the film formation potential.
► Electronic structure of the passive film and its corrosion resistance correlate well.
► Passive film on ASS with nitrogen is low disordered and high corrosion resistant.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 53, Issue 6, June 2011, Pages 2176–2183
نویسندگان
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