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Electrochemical Corrosion Behaviour of WE54 Magnesium Alloy

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Abstract:

The electrochemical corrosion behaviour of WE54 magnesium alloy in 0.5 wt.% NaCl solution was studied using electrochemical techniques. Polarization results suggested that the rare-earths in WE54 alloy enhanced the passivation tendency of the alloy and decreased the corrosion current by ~30% compared to pure magnesium. Pitting corrosion resistance was also higher in WE54 alloy than that in pure magnesium. Long-term electrochemical impedance results showed that the polarization resistance of WE54 alloy was more than two times higher than that of pure magnesium even after initial passivity breakdown.

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Periodical:

Materials Science Forum (Volume 765)

Pages:

644-647

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.765.644

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Online since:

July 2013

Authors:

O. Kazum, Mathan Bobby Kannan, Nico Scharnagl, Carsten Blawert, Ying He He

Keywords:

Corrosion, Magnesium Alloy, Polarization, Rare Earth

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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