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An additively manufactured magnesium-aluminium alloy withstands seawater corrosion

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dc.contributor.authorZeng, Zhuoran
dc.contributor.authorChoudhary, Sanjay
dc.contributor.authorEsmaily, Marco
dc.contributor.authorBenn, Felix
dc.contributor.authorDerra, Thomas
dc.contributor.authorHora, Yvonne
dc.contributor.authorKopp, Alexander
dc.contributor.authorAllanore, Antoine
dc.contributor.authorBirbilis, Nick
dc.date.accessioned2023-07-11T02:11:22Z
dc.date.available2023-07-11T02:11:22Z
dc.date.issued2022-04-20
dc.date.updated2022-04-24T10:05:46Z
dc.description.abstractMagnesium, the lightest structural metal, has inherently poor corrosion resistance. In this study, we developed a magnesiumaluminium Mg-10.6Al-0.6Zn-0.3Mn alloy, additively manufactured by laser powder bed fusion. We reveal that this alloy has a record low degradation rate amongst all magnesium alloys in practically relevant corrosive solutions, and it even withstands seawater corrosion. As tested by a number of methods, the alloy shows even more enhanced passivation with longer immersion periods. The alloy surface following immersion maintained a nearly corrosion-free appearance and was determined to have a thin aluminiumcontaining surface film, due to surface enrichment of aluminium from the supersaturated matrix. Aluminium enrichment near the sample surface was also observed when the sample is immersed in phosphoric acid or exposed to atmosphere at room temperature. This study demonstrates the prospects for additively manufactured ultra-lightweight magnesium structure with outstanding corrosion resistance.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn2397-2106en_AU
dc.identifier.urihttp://hdl.handle.net/1885/294108
dc.language.isoen_AUen_AU
dc.provenanceThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons. org/licenses/by/4.0/.en_AU
dc.publisherNature Publishing Groupen_AU
dc.rights© The Author(s) 2022en_AU
dc.rights.licenseCreative Commons Attribution 4.0 International Licenseen_AU
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_AU
dc.sourcenpj Materials Degradationen_AU
dc.titleAn additively manufactured magnesium-aluminium alloy withstands seawater corrosionen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue32en_AU
local.bibliographicCitation.lastpage10en_AU
local.bibliographicCitation.startpage1en_AU
local.contributor.affiliationZeng, Zhuoran, College of Engineering and Computer Science, The Australian National Universityen_AU
local.description.notesImported from Springer Natureen_AU
local.identifier.citationvolume6en_AU
local.identifier.doi10.1038/s41529-022-00241-5en_AU
local.publisher.urlhttps://www.nature.com/en_AU
local.type.statusPublished Versionen_AU

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