Uroš Trdan (Author), Sano Tomokazu (Author), Damjan Klobčar (Author), Yuji Sano (Author), Janez Grum (Author), Roman Šturm (Author)

Abstract

This work reports for the first time the effect of femtosecond laser shock peening (fLSP) without a sacrificial overlay under atmospheric conditions (no confinement) on the corrosion behaviour of AA2024-T3. After fLSP and additional exposure to air a superhydrophobic state ([thete]=160+/- 4°) is achieved. Moreover, fLSPed corrosion-resistant surface contributes to increased polarization resistance, reduced corrosion current and lower anodic dissolution, with long-term stability in aggressive chloride solution. Furthermore, SEM/EDS characterisation reveals reduction in pitting and complete eradication of intergranular corrosion (IGC) attack due to reduced metal/electrolyte contact area and homogeneous, refined microstructure which prevents chain-link IGC propagation.

Keywords

aluminium alloy 2024-T3;polarization;scanning electron microscope - SEM;intergranular corrosion;pitting corrosion;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 620.1(045)
COBISS: 16218651 Link will open in a new window
ISSN: 0010-938X
Views: 2930
Downloads: 592
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Other data

Secondary language: Slovenian
Secondary keywords: aluminijeva zlitina 2024-T3;polarizacija;vrstični elektronski mikroskop - SEM;interkristalna korozija;jamičasta korozija;
Type (COBISS): Article
Embargo end date (OpenAIRE): 2020-10-01
Pages: str. 46-55
Issue: ǂVol. ǂ143
Chronology: Oct. 2018
DOI: 10.1016/j.corsci.2018.08.030
ID: 12967718