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Wild avalanches and mild fluctuations during filiform corrosion of Mg in NaCl solution
- Source :
- Physical Review Research, Vol 5, Iss 3, p 033219 (2023)
- Publication Year :
- 2023
- Publisher :
- American Physical Society, 2023.
-
Abstract
- The filiform corrosion of Mg in NaCl solution was characterized by acoustic emission spectroscopy, measurements of the free-corrosion potential, and optical observations under in situ conditions. Three stages of corrosion were identified: an incubation period, localized attack, and filament propagation. The corrosion mechanisms include the Mg dissolution, the breakdown of hydroxide/oxide surface films, and the burst of gas bubbles. Localized attack and filament propagation are distinguished by a gradual transition from correlated avalanches (wild events) to predominantly stochastic processes (mild events), which still contain some weak avalanche signals. Our approach provides a way to monitor corrosion under in situ conditions.
Details
- Language :
- English
- ISSN :
- 26431564
- Volume :
- 5
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Physical Review Research
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.9814c9c11468484298bb4f2a1b3e5ec4
- Document Type :
- article
- Full Text :
- https://doi.org/10.1103/PhysRevResearch.5.033219