Mg Corrosion—Recent Progress
Recent progress is reviewed. Recent developments include: (i) accumulation of evidence that electrochemical measurements of the Mg corrosion rate often do not agree with the steady state Mg corrosion rate as measured by weight loss; (ii) low Fe tolerance limits are caused by heat treatment of nomina...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Corrosion and Materials Degradation |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2624-5558/3/4/31 |
| _version_ | 1827641199361523712 |
|---|---|
| author | Andrej Atrens Xingrui Chen Zhiming Shi |
| author_facet | Andrej Atrens Xingrui Chen Zhiming Shi |
| author_sort | Andrej Atrens |
| collection | DOAJ |
| description | Recent progress is reviewed. Recent developments include: (i) accumulation of evidence that electrochemical measurements of the Mg corrosion rate often do not agree with the steady state Mg corrosion rate as measured by weight loss; (ii) low Fe tolerance limits are caused by heat treatment of nominally high-purity Mg and the presence of Si, (iii) the intrinsic Mg corrosion rate is 0.3 mm/y in a chloride solution as measured by weight loss, (iv) there are many Mg alloys with corrosion rates between 0.3 and 1.0 mm/y, (v) there are few Mg alloys with corrosion rates less than 0.3 mm/y, (vi) experimental evidence contradicts the enhanced catalytic activity mechanism of Mg corrosion, (vii) experiments support the uni-positive Mg<sup>+</sup> mechanism, (viii) new compelling experimental evidence supporting the uni-positive Mg<sup>+</sup> corrosion mechanism has been provided by electrochemical impedance spectroscopy (EIS), and (ix) the uni-positive Mg<sup>+</sup> corrosion mechanism provides new insights for understanding the performance of Mg-air batteries and for the development of better Mg anodes. |
| first_indexed | 2024-03-09T17:09:58Z |
| format | Article |
| id | doaj.art-073bb26147f242beb623f128a2acde81 |
| institution | Directory Open Access Journal |
| issn | 2624-5558 |
| language | English |
| last_indexed | 2024-03-09T17:09:58Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Corrosion and Materials Degradation |
| spelling | doaj.art-073bb26147f242beb623f128a2acde812023-11-24T14:05:49ZengMDPI AGCorrosion and Materials Degradation2624-55582022-09-013456659710.3390/cmd3040031Mg Corrosion—Recent ProgressAndrej Atrens0Xingrui Chen1Zhiming Shi2Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, AustraliaCentre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, AustraliaCentre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, AustraliaRecent progress is reviewed. Recent developments include: (i) accumulation of evidence that electrochemical measurements of the Mg corrosion rate often do not agree with the steady state Mg corrosion rate as measured by weight loss; (ii) low Fe tolerance limits are caused by heat treatment of nominally high-purity Mg and the presence of Si, (iii) the intrinsic Mg corrosion rate is 0.3 mm/y in a chloride solution as measured by weight loss, (iv) there are many Mg alloys with corrosion rates between 0.3 and 1.0 mm/y, (v) there are few Mg alloys with corrosion rates less than 0.3 mm/y, (vi) experimental evidence contradicts the enhanced catalytic activity mechanism of Mg corrosion, (vii) experiments support the uni-positive Mg<sup>+</sup> mechanism, (viii) new compelling experimental evidence supporting the uni-positive Mg<sup>+</sup> corrosion mechanism has been provided by electrochemical impedance spectroscopy (EIS), and (ix) the uni-positive Mg<sup>+</sup> corrosion mechanism provides new insights for understanding the performance of Mg-air batteries and for the development of better Mg anodes.https://www.mdpi.com/2624-5558/3/4/31Mg corrosionanodic hydrogenintrinsic Mg corrosion rateuni-positive Mg<sup>+</sup> corrosion mechanismenhanced catalytic Mg corrosion mechanismapparent Mg valence |
| spellingShingle | Andrej Atrens Xingrui Chen Zhiming Shi Mg Corrosion—Recent Progress Corrosion and Materials Degradation Mg corrosion anodic hydrogen intrinsic Mg corrosion rate uni-positive Mg<sup>+</sup> corrosion mechanism enhanced catalytic Mg corrosion mechanism apparent Mg valence |
| title | Mg Corrosion—Recent Progress |
| title_full | Mg Corrosion—Recent Progress |
| title_fullStr | Mg Corrosion—Recent Progress |
| title_full_unstemmed | Mg Corrosion—Recent Progress |
| title_short | Mg Corrosion—Recent Progress |
| title_sort | mg corrosion recent progress |
| topic | Mg corrosion anodic hydrogen intrinsic Mg corrosion rate uni-positive Mg<sup>+</sup> corrosion mechanism enhanced catalytic Mg corrosion mechanism apparent Mg valence |
| url | https://www.mdpi.com/2624-5558/3/4/31 |
| work_keys_str_mv | AT andrejatrens mgcorrosionrecentprogress AT xingruichen mgcorrosionrecentprogress AT zhimingshi mgcorrosionrecentprogress |