Journal
CORROSION SCIENCE
Volume 194, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109925
Keywords
A; aluminum; A; magnesium; B; cyclic voltammetry; B; polarization; C; intergranular corrosion; C; passivity
Funding
- European Structural and Investing Funds, Operational Programme Research, Development and Education [CZ.02.1.01/0.0/0.0/15_006/0000674]
- European Union [739573]
- Ohio Center for Laser Shock Processing for Advanced Materials and Devices [TECH 10-014]
Ask authors/readers for more resources
The study found that Laser Shock Peening (LSP) and Laser Peening without protective coating (LPwC) on sensitized AA5083 resulted in LPwC samples with improved corrosion resistance and lower corrosion current, while LSP samples showed only slight improvement in intergranular corrosion rate. This is attributed to the unique recast surface layer and embedded oxygen-rich aluminum nanoparticles sub-surface layer created during laser pulse interaction when no coating was applied.
Laser Shock Peening with (LSP) and without protective coating (LPwC) was applied to sensitized AA5083 followed by electrochemical analysis. Potentiodynamic tests indicated a region of increased passivity for the LPwC samples with lower corrosion current. Similarly, significantly reduced intergranular corrosion rate was observed during potentiostatic polarization after LPwC treatment while LSP samples showed only a negligible improvement. The results are attributed to the unique recast surface layer composed of a modified oxide film followed by an embedded oxygen-rich aluminum nanoparticles sub-surface layer without grain boundary 8-phase created during laser pulse interaction with the surface when no coating was applied.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
