Three-dimensional analysis of the microstructure and bio-corrosion of Mg-Zn and Mg-Zn-Ca alloys

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The effects of the morphology and the distribution of secondary phases on the bio-corrosion properties of magnesium (Mg) alloys are significant. Focused Ion Beam (FIB) tomography and Micro X-Ray computed tomography (Micro-CT) have been used to characterise the morphology and distribution of (α-Mg + MgZn) and (α-Mg + Ca2 + Mg6 + Zn3) eutectic phase mixtures in as-cast Mg-3Zn and Mg-3Zn-0.3Ca alloys, respectively. There were two different 3D distributions: (i) an interconnected network and (ii) individual spheres. The tomography informed our understanding of the relationship between the distribution of secondary phases and the development of localized corrosion in magnesium alloys.


Original languageEnglish
Pages (from-to)113-121
Number of pages9
JournalMaterials Characterization
Early online date12 Dec 2015
Publication statusPublished - 1 Feb 2016


  • Bio-corrosion, FIB-SEM, Magnesium alloy, Micro-CT, Microstructure