Second phase effect on corrosion of nanostructured Mg-Zn-Ca dual-phase metallic glasses

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

18 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1546-1555
Journal / PublicationJournal of Magnesium and Alloys
Volume9
Issue number5
Online published26 May 2021
Publication statusPublished - 15 Sept 2021

Link(s)

Abstract

Dual-phase metallic glasses (DP-MGs), a special member of the MGs family, often reveal unusual strength and ductility, yet, their corrosion behaviors are not understood. Here, we developed a nanostructured Mg57Zn36Ca7 (at.%) DP-MG and uncovered its corrosion mechanism in simulated body fluid (SBF) at the near-atomic scale utilizing transmission electron microscope (TEM) and atom probe tomography (APT). The 10-nm-wide Ca-rich amorphous phases allow oxygen propagation into the DP-MG, resulting in a micrometer thick hydroxides/oxides layer. This dense corrosion layer protects the DP-MG from further corrosion, enabling a corrosion rate that is 77% lower than that of Mg (99.99% purity).

Research Area(s)

  • APT, Corrosion, Magnesium alloys, Metallic glass, Sputtered films, TEM

Citation Format(s)

Second phase effect on corrosion of nanostructured Mg-Zn-Ca dual-phase metallic glasses. / Liu, Chang; Wang, Qing; Han, Bin et al.
In: Journal of Magnesium and Alloys, Vol. 9, No. 5, 15.09.2021, p. 1546-1555.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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