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2020 | OriginalPaper | Buchkapitel

Development of Ultra Lightweight, Corrosion Resistant Mg Alloys

verfasst von : T. W. Cain, J. P. Labukas

Erschienen in: Magnesium Technology 2020

Verlag: Springer International Publishing

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Abstract

The corrosion behavior of BCC Mg–11Li–xGe (x = 0, 0.3, 0.5 wt%) alloys was evaluated in quiescent 3.5 wt% NaCl(aq) via potentiodynamic polarization, in situ optical imaging, and hydrogen volume capture in comparison with commercial Mg alloy AZ31B-H24. It is shown that Mg–11Li and Mg–11Li–0.3 Ge alloys possessed a lower corrosion rate after 24 h immersion at open circuit potential with respect to AZ31B-H24. Mg–11Li–0.3Ge alloy possessed the lowest corrosion rate due to simultaneous reduction of cathodic kinetics and an improved pseudo passive film. Increasing the Ge concentration to 0.5 wt% was found to be detrimental to cathodic kinetics and passive film stability due to micro-galvanic coupling.

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Titel: Development of Ultra Lightweight, Corrosion Resistant Mg Alloys
verfasst von: T. W. Cain
J. P. Labukas
Verlag: Springer International Publishing
Buch: Magnesium Technology 2020
Print ISBN: 978-3-030-36646-9

Electronic ISBN: 978-3-030-36647-6

Copyright-Jahr: 2020
DOI: https://doi.org/10.1007/978-3-030-36647-6_9

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