Abstract This paper describes a new approach for enhancing the pitting corrosion resistance of aluminum 1050 alloy. The aluminum surface was treated by pulsed laser (850 mJ) prior to anodization. Anodization was carried out at 15 V in a hybrid electrolyte saturated with reduced graphene nanocomposite (rGO-Ag). The oxide layer was analyzed using polarization and cyclic voltammetry tests. The microstructure and metal composition of the modified surface structure were investigated using a scanning electron microscope and an energy-dispersive detector. The addition of graphene nanocomposite to the electrolyte can enhance the current density (Icorr) to 96.60 µA/cm2 and corrosion potential (Ecorr) to −395.4 mV. Q-switched Nd:YAG pulsed laser surface treatment offered a substantially increase in the corrosion resistance. Laser performance results indicated a substantial difference in the protection of aluminum surface compared with that of the untreated sample. The process employed in this research aimed at improving the pitting corrosion resistance and enhancing the chemical reaction resistance of the aluminum oxide layer in artificial seawater environment.

中文翻译：

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激光和还原氧化石墨烯基纳米银对 1050 铝合金的耐腐蚀性增强

摘要 本文介绍了一种提高铝1050合金抗点蚀性能的新方法。在阳极氧化之前，铝表面经过脉冲激光 (850 mJ) 处理。阳极氧化在 15 V 下在混合电解质中进行，该电解质饱和有还原石墨烯纳米复合材料 (rGO-Ag)。使用极化和循环伏安法测试分析氧化层。使用扫描电子显微镜和能量色散探测器研究了改性表面结构的微观结构和金属成分。在电解质中添加石墨烯纳米复合材料可以将电流密度 (Icorr) 提高到 96.60 µA/cm2，将腐蚀电位 (Ecorr) 提高到 -395.4 mV。调Q Nd:YAG 脉冲激光表面处理显着提高了耐腐蚀性。激光性能结果表明，与未经处理的样品相比，铝表面的保护存在显着差异。本研究采用的工艺旨在提高铝氧化层在人工海水环境中的抗点蚀能力和抗化学反应能力。