Anodik Polarizasyon ve Kayma Aşınmasının Gemi İnşa Alüminyum Alaşımı 5083'ün Çukurcuk Korozyonu Davranışına Etkisi

Sabri ALKAN
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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.
阳极极化和滑动腐蚀对造船铝合金 5083 点蚀行为的影响
本研究旨在表征船舶用铝合金5083在模拟海水中滑动磨损和不同阳极极化条件下的点蚀和摩擦腐蚀机制。在3.5% NaCl溶液中,建立了3 N载荷和不同阳极电位条件下的摩擦腐蚀实验装置。在研究中,由于试验材料的硬度较低,磨损轨迹表面出现了许多沟槽、平行划痕和横向裂纹。氯离子对AA 5083的腐蚀和摩擦腐蚀行为起决定性作用。AA5083的溶解电位由开路电位上升到较高的阳极电位。在高阳极电位下,观察到与纯铝类似的半立方点蚀机制和晶间点蚀机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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