Effect of Anodic Polarization and Sliding Wear on Pitting Corrosion Behavior of Shipbuilding Aluminum Alloy 5083

Authors : Sabri Alkan

Pages : 360-370

Doi:10.46387/bjesr.1338038

View : 73 | Download : 89

Publication Date : 2023-10-27

Article Type : Research Paper

Abstract :This study aimed to characterize the pitting corrosion and simultaneous wear-corrosion (tribocorrosion) mechanisms of shipbuilding aluminum alloy 5083 under sliding wear and different anodic polarization conditions in simulated seawater. A tribocorrosion experimental setup was provided for the study under a 3 N load and different anodic potentials in a 3.5% NaCl solution. In the study, many grooves, parallel scratches and transverse cracks were determined on the wear track surface due to the low hardness of the test material. Chloride ions played a decisive role in the corrosion and tribocorrosion behavior of AA 5083. The dissolution of AA5083 increased from open circuit potential to higher anodic potentials. A half-cube mechanism, similar to the pitting corrosion of pure aluminum, and an intergranular pitting corrosion mechanism were observed under high anodic potentials.
Keywords : Alüminyum Alaşım, Gemi İnşa, Korozif aşınma, Çukurcuk Korozyonu

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