کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1470949 990338 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Corrosion behaviour of vacuum induction-melted Ni-based alloy in sulphuric acid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Corrosion behaviour of vacuum induction-melted Ni-based alloy in sulphuric acid
چکیده انگلیسی

A vacuum induction-melted (VIM) Ni-based alloy was immersed in 60% H2SO4 solution to investigate its corrosion behaviour and resistance. The results indicate that the microstructure contains a γ-Ni solid solution + Ni3Si particles, dendrite Ni3Si, Ni3B, Cr7C3, and CrB. The corrosion started at the zones of the γ-Ni solid solution + Ni3Si particles and dendrite Ni3Si. These zones transformed to oxide films and protected the alloy from significant attack. However, the pitting corrosion created paths for acid solution and/or SO42- to further attack. Therefore, the corrosion rate decreased and then stabilised at a high value as the immersion time increased.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 52, Issue 7, July 2010, Pages 2323–2330
نویسندگان
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