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Fabrication of a superhydrophobic surface on Al alloy 5052 via combined anodic oxidation and fluorination treatment
Materials and Corrosion ( IF 1.8 ) Pub Date : 2021-03-03 , DOI: 10.1002/maco.202012190 Lkhagvaa Telmenbayar 1, 2 , Tumur‐Ochir Erdenebat 1, 2 , Minjung Song 1 , Daejeong Yang 1 , Ramu Adam Gopal 1 , Dongjin Choi 1
Materials and Corrosion ( IF 1.8 ) Pub Date : 2021-03-03 , DOI: 10.1002/maco.202012190 Lkhagvaa Telmenbayar 1, 2 , Tumur‐Ochir Erdenebat 1, 2 , Minjung Song 1 , Daejeong Yang 1 , Ramu Adam Gopal 1 , Dongjin Choi 1
Affiliation
In this study, a superhydrophobic surface was successfully prepared on Al alloy 5052 using a simple anodic oxidation method followed by fluorination treatment. This study demonstrates the construction of rough structure of Al oxide by an anodic oxidation reaction, which improves the superhydrophobicity of the alloy. The top, tilt, and cross-views of the samples were characterized by field-emission scanning electron microscopy and focused ion beam. The chemical composition of the samples was analyzed by energy-dispersive X-ray spectroscopy and Fourier-transform infrared spectroscopy. The structure of the surface was effectively modified as the anodization time increased. The optimum anodic oxidation reaction was carried out for 4 min in a 0.2-M H3PO4 aqueous electrolyte at 50°C under a constant voltage of 120 V to create a pore-and-dendrite hybrid nanostructure. The water contact angle values were maximized in the hybrid nanostructure because their solid fraction area was smaller than that in the porous structure. Corrosion measurements proved that the superhydrophobic surface can significantly inhibit the corrosion of the substrate alloy with an inhibition efficiency of 99.99%. In addition, the prepared superhydrophobic sample exhibited good self-cleaning properties.
中文翻译:
通过阳极氧化和氟化联合处理在铝合金 5052 上制备超疏水表面
在这项研究中,使用简单的阳极氧化方法,然后进行氟化处理,成功地在 Al 合金 5052 上制备了超疏水表面。本研究证明了通过阳极氧化反应构建了氧化铝的粗糙结构,从而提高了合金的超疏水性。通过场发射扫描电子显微镜和聚焦离子束表征样品的顶部、倾斜和交叉视图。通过能量色散X射线光谱和傅里叶变换红外光谱分析样品的化学成分。随着阳极氧化时间的增加,表面的结构得到了有效的改变。最佳阳极氧化反应在 0.2-MH 3 PO 4中进行 4 分钟水性电解质在 50°C 和 120 V 的恒定电压下形成孔和枝晶混合纳米结构。水接触角值在混合纳米结构中最大化,因为它们的固体部分面积小于多孔结构中的。腐蚀测量证明,超疏水表面可以显着抑制基体合金的腐蚀,抑制效率达99.99%。此外,制备的超疏水样品表现出良好的自清洁性能。
更新日期:2021-03-03
中文翻译:
通过阳极氧化和氟化联合处理在铝合金 5052 上制备超疏水表面
在这项研究中,使用简单的阳极氧化方法,然后进行氟化处理,成功地在 Al 合金 5052 上制备了超疏水表面。本研究证明了通过阳极氧化反应构建了氧化铝的粗糙结构,从而提高了合金的超疏水性。通过场发射扫描电子显微镜和聚焦离子束表征样品的顶部、倾斜和交叉视图。通过能量色散X射线光谱和傅里叶变换红外光谱分析样品的化学成分。随着阳极氧化时间的增加,表面的结构得到了有效的改变。最佳阳极氧化反应在 0.2-MH 3 PO 4中进行 4 分钟水性电解质在 50°C 和 120 V 的恒定电压下形成孔和枝晶混合纳米结构。水接触角值在混合纳米结构中最大化,因为它们的固体部分面积小于多孔结构中的。腐蚀测量证明,超疏水表面可以显着抑制基体合金的腐蚀,抑制效率达99.99%。此外,制备的超疏水样品表现出良好的自清洁性能。