کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
187101 459634 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrodeposition and corrosion characterisation of micro- and nano-crystalline aluminium from AlCl3/1-ethyl-3-methylimidazolium chloride ionic liquid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrodeposition and corrosion characterisation of micro- and nano-crystalline aluminium from AlCl3/1-ethyl-3-methylimidazolium chloride ionic liquid
چکیده انگلیسی

This study reports on the electrodeposition of Al from AlCl3/1-ethyl-3-methylimidazolium chloride (EMIC) ionic liquid, with the aim at determination of the mechanism applied and correlation of deposition kinetics and coulombic current efficiency with the microstructure and corrosion behaviour of Al deposits. Cyclic voltammetry studies were conducted on both platinum and steel substrates with various scanning rates and reversal potentials. Potentiostatic electrodeposition experiments were applied to obtain functional Al layers on low carbon steel substrates and the effect of deposition potential on the deposit morphology and crystal size was investigated using SEM-EDX and XRD. Nano-crystalline Al deposits were obtained on low carbon steel substrates using polarisation potentials more negative to −600 mVvsAl, and the Al crystallite size was scaled down to 28 nm at −700 mVvsAl. Nano-crystalline deposits, with brighter and flatter surfaces, showed higher corrosion resistance in aqueous chloride solutions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 103, 30 July 2013, Pages 211–218
نویسندگان
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