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Effect of High-Intensity Pulsed Ion Beam Irradiation on the Electrochemical Corrosion Behavior of AZ31 Magnesium Alloy

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Abstract:

HIPIB irradiation experiment is carried out at a specific ion current density of 1.1 J/cm2 with shot number from one to ten in order to explore the effect of shot number on electrochemical corrosion behavior of magnesium alloy. Surface morphologies, microstructure and corrosion resistance of the irradiated samples are examined by scanning electron microscopy (SEM), transmission electron microscope (TEM) and potentiodynamic polarization technique, respectively. It is found that HIPIB irradiation leads to the increase in open circuit potential, corrosion potential and breakdown potential, and the decrease in the corrosion current density and the corrosion rate as compared to the original sample. The improved corrosion resistance is mainly attributed to the grain refinement and surface purification induced by HIPIB irradiation.

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Periodical:

Advanced Materials Research (Volumes 189-193)

Pages:

571-574

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.571

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Online since:

February 2011

Authors:

Peng Li

Keywords:

Corrosion Resistance, High-Intensity Pulsed Ion Beam, Magnesium Alloy, Microstructure

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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