کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1470684 990331 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Erosion–corrosion of carbon steel in simulated tailing slurries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Erosion–corrosion of carbon steel in simulated tailing slurries
چکیده انگلیسی

This paper investigates the synergism of mechanical and electrochemical factors in erosion–corrosion. The fact that active corrosion in the tailing slurry donates a small portion of total material loss indicates that the synergism results mainly from corrosion-enhanced erosion. As theoretically predicted, the erosion rates in corroding slurry under same hydrodynamic condition is a linear function of logarithmic corrosion rate, suggesting that the corrosion-induced surface plasticity is the dominate mechanism of corrosion-enhanced erosion. The reduced resistance to plastic deformation in surface layer while exposed to corroding media is demonstrated by the in situ micro-hardness measurements. The erosion-enhanced corrosion in flowing slurry of steel is a result of dynamic plastic deformation caused by erodent impingement.

Research highlights
► Physical model for predicting corrosion-enhanced erosion is established on basis of irreversible thermodynamics.
► The model for erosion-enhanced corrosion is modified to consider the non-uniform distribution of anodic dissolution over target surface.
► The models are validated by the in-situ microhardness measurement and erosion-corrosion tests.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 53, Issue 3, March 2011, Pages 1000–1008
نویسندگان
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