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Electrochemical Characterization of Carbon and Weathering Steels Corrosion Products to Determine the Protective Ability Using Carbon Paste Electrode (CPE)
Author(s) -
Dhaiveegan P.,
Elangovan N.,
Nishimura T.,
Rajendran N.
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400240
Subject(s) - corrosion , dielectric spectroscopy , materials science , weathering steel , polarization (electrochemistry) , carbon steel , electrochemistry , cyclic voltammetry , metallurgy , carbon paste electrode , weathering , carbon fibers , electrode , rust (programming language) , fourier transform infrared spectroscopy , chemical engineering , composite material , chemistry , composite number , geomorphology , computer science , engineering , programming language , geology
Abstract The electrochemistry of the corrosion products formed from carbon and weathering steel during four years of atmospheric exposure were investigated using a carbon paste electrode (CPE) by cyclic and square wave voltammetry. The iron rust products with crystalline nature were identified from their standard formal potential. The corrosion protection ability of the rust layers were determined by polarization and electrochemical impedance spectroscopy studies using CPE. ATR‐FTIR, SEM and XRD studies were employed to identify the composition and morphology of the corrosion products which supports SWV results. Results showed that the weathering steel has higher corrosion resistance than the carbon steel.