Electrochemical Behavior of Mg-6mass%Al Alloy Corroded in Na2SO4 and NaCl Solutions

Shunsuke Saito; Satoshi Sunada; Mitsuaki Furui; Susumu Ikeno; Seiji Saikawa

doi:10.4028/www.scientific.net/AMR.409.368

Paper Titles

HRTEM Observation of Early Stage of Precipitation in Mg-Gd-Y Alloys
p.350

Effect of Zn Content on Aging Behavior of Binary Mg-Zn Alloys
p.354

Effect of Zn Contents on Microstructure in AZ-Series Magnesium Alloys
p.358

Evolution of as-Cast Microstructure of Mg-Al Alloys with Solute Content and Cooling Rate
p.362

Electrochemical Behavior of Mg-6mass%Al Alloy Corroded in Na₂SO₄ and NaCl Solutions
p.368

Effect of Grain Size on Microstructure and Aging Behavior in AM60 Magnesium Alloy
p.373

Effect of Al and Mn Contents on Microstructure in AM-Series Magnesium Alloys
p.379

Crystallographic Orientation Relationship between Discontinuous Precipitates and the Matrix in AM-Series Alloys
p.383

Morphological and Crystallographic Characterizations of the Ca-Mg-Zn Intermetallics Appearing in Ternary Diffusion Couples
p.387

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 409Electrochemical Behavior of Mg-6mass%Al Alloy...

Electrochemical Behavior of Mg-6mass%Al Alloy Corroded in Na₂SO₄ and NaCl Solutions

Abstract:

The corrosion behavior of Mg-6mass%Al alloy with different microstructure conditions was studied by electrochemical method in Na₂SO₄ and NaCl solutions. A measurement of polarization curves was carried out in order to investigate the fundamental electrochemical characteristics. Electrochemical impedance spectroscopy was carried out to discuss the corrosion characteristics that were obtained from polarization curves. Electrochemical measurements were carried out with as-cast, as solution-treated and two kinds of aged specimens, respectively. For measurement of polarization curves, the apparent difference was exhibited in behavior showing the pitting corrosion by difference of solutions. In all specimens, the corrosion current density which occurred in four kinds of specimens was higher in the NaCl solution than in Na₂SO₄ solution.

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Periodical:

Advanced Materials Research (Volume 409)

Pages:

368-372

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.409.368

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Online since:

November 2011

Authors:

Shunsuke Saito, Satoshi Sunada, Mitsuaki Furui, Susumu Ikeno, Seiji Saikawa

Keywords:

Corrosion, Electrochemical Analysis, Mg-6mass%Al Alloy, Microstructure

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