کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1265534 972227 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Water irradiation by high-frequency ultrasonic wave: Effects on properties of passive film formed on stainless steel
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Water irradiation by high-frequency ultrasonic wave: Effects on properties of passive film formed on stainless steel
چکیده انگلیسی

In this paper an aqueous solution was irradiated with a 1.63 MHz ultrasonic wave. It is shown that if stainless steel can passivate under dynamic polarization in this medium, under static polarization, the latter does not show any repassivation behaviour with time. This is attributed to a diminution of the diffusion layer thickness that is developed at the electrode/electrolyte interface, which is associated with a production of H2 species by sonolysis and which maintains reductive conditions at the interface. The oxide film formed under ultrasonic irradiation for 1 h at a passive potential of +0.2 VSCE shows an early stage of passivation and an increased disordered state, which implies a considerable decrease in the corrosion resistance behaviour of the sample. The polarization resistance of the stainless steel Rp is divided by a value of 4.5 under ultrasonic conditions.


► Simulation of water radiolysis by sonochemistry.
► No repassivation behaviour of the 316L with time under ultrasonic.
► Acceleration of reduction and oxidation kinetics.
► Polarization resistance of the stainless steel 4.5 times lower under ultrasonic.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 18, Issue 6, November 2011, Pages 1287–1294
نویسندگان
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