The effect of laser shock peening with and without protective coating on intergranular corrosion of sensitized AA5083

0553424 - FZÚ 2023 RIV GB eng J - Článek v odborném periodiku
Kaufman, Jan - Racek, Jan - Cieslar, M. - Minárik, P. - Steiner, M.A. - Mannava, S.R. - Vasudevan, V.K. - Sharma, A. - Böhm, Marek - Brajer, Jan - Pilař, Jan - Pína, L. - Mocek, Tomáš
The effect of laser shock peening with and without protective coating on intergranular corrosion of sensitized AA5083.
Corrosion Science. Roč. 194, Jan. (2022), č. článku 109925. ISSN 0010-938X. E-ISSN 1879-0496
Grant CEP: GA MŠMT EF15_006/0000674
GRANT EU: European Commission(XE) 739573 - HiLASE CoE
Grant ostatní: OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institucionální podpora: RVO:68378271
Klíčová slova: aluminum * magnesium * cyclic voltammetry * polarization * intergranular corrosion * passivity
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 8.3, rok: 2022
Způsob publikování: Open access

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 β-phase created during laser pulse interaction with the surface when no coating was applied.

Trvalý link: https://hdl.handle.net/11104/0339438