Journal
JOURNAL OF THE KOREAN ELECTROCHEMICAL SOCIETY
Volume 13, Issue 2, Pages 96-102Publisher
KOREAN ELECTROCHEMICAL SOC
DOI: 10.5229/JKES.2010.13.2.096
Keywords
Electrochemical technique; Corrosion rate; Low alloy steel; Predominant corrosion region; Specimen area
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Effects of specimen area on the corrosion rate of low alloy steel were studied in sulfuric acid solution. The corrosion behavior of specimen was tested by electrochemical impedance spectroscopy (EIS), linear polarization resistance measurement (LPR) and potentiodynamic polarization measurement. The surface was analyzed by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and electron probe X-ray micro analyzer (EPMA). As surface area was increased, corrosion rate was increased by the effect of small anode-large cathode.
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