On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys
The surface film on pure magnesium and two aluminium-containing magnesium alloys was characterised after 96 h at 95% RH and 22 °C. The concentration of CO₂ was carefully controlled to be either 0 or 400 ppm. The exposed samples were investigated using X-ray photoelectron spectroscopy, Fourier transf...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/131076 |
| _version_ | 1826210617023791104 |
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| author | Shahabi-Navid, M. Cao, Y. Svensson, J. E. Allanore, Antoine Birbilis, N. Johansson, L. G. Esmaily, M. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Shahabi-Navid, M. Cao, Y. Svensson, J. E. Allanore, Antoine Birbilis, N. Johansson, L. G. Esmaily, M. |
| author_sort | Shahabi-Navid, M. |
| collection | MIT |
| description | The surface film on pure magnesium and two aluminium-containing magnesium alloys was characterised after 96 h at 95% RH and 22 °C. The concentration of CO₂ was carefully controlled to be either 0 or 400 ppm. The exposed samples were investigated using X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and electron microscopy. The results showed that when the alloys were exposed to the CO₂-containing environment, aluminium cations (Al³⁺) was incorporated into a layered surface film comprising a partially “hydrated” MgO layer followed by Mg(OH)₂, and magnesium hydroxy carbonates. The results indicated that aluminium-containing magnesium alloys exhibited considerably less localised corrosion in humid air than pure magnesium. Localised corrosion in the materials under investigation was attributed to film thinning by a dissolution/precipitation mechanism. |
| first_indexed | 2024-09-23T14:52:28Z |
| format | Article |
| id | mit-1721.1/131076 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:52:28Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1310762022-09-29T11:10:21Z On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys Shahabi-Navid, M. Cao, Y. Svensson, J. E. Allanore, Antoine Birbilis, N. Johansson, L. G. Esmaily, M. Massachusetts Institute of Technology. Department of Materials Science and Engineering MIT Materials Research Laboratory The surface film on pure magnesium and two aluminium-containing magnesium alloys was characterised after 96 h at 95% RH and 22 °C. The concentration of CO₂ was carefully controlled to be either 0 or 400 ppm. The exposed samples were investigated using X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and electron microscopy. The results showed that when the alloys were exposed to the CO₂-containing environment, aluminium cations (Al³⁺) was incorporated into a layered surface film comprising a partially “hydrated” MgO layer followed by Mg(OH)₂, and magnesium hydroxy carbonates. The results indicated that aluminium-containing magnesium alloys exhibited considerably less localised corrosion in humid air than pure magnesium. Localised corrosion in the materials under investigation was attributed to film thinning by a dissolution/precipitation mechanism. 2021-07-13T19:01:55Z 2021-07-13T19:01:55Z 2020-12 2020-08 2021-07-12T16:45:50Z Article http://purl.org/eprint/type/JournalArticle 2045-2322 https://hdl.handle.net/1721.1/131076 Shahabi-Navid, M. et al. "On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys." Scientific Reports 10, 1 (December 2020): 20972. © 2020 The Author(s) en http://dx.doi.org/10.1038/s41598-020-78030-w Scientific Reports Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Scientific Reports |
| spellingShingle | Shahabi-Navid, M. Cao, Y. Svensson, J. E. Allanore, Antoine Birbilis, N. Johansson, L. G. Esmaily, M. On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys |
| title | On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys |
| title_full | On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys |
| title_fullStr | On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys |
| title_full_unstemmed | On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys |
| title_short | On the early stages of localised atmospheric corrosion of magnesium–aluminium alloys |
| title_sort | on the early stages of localised atmospheric corrosion of magnesium aluminium alloys |
| url | https://hdl.handle.net/1721.1/131076 |
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