Hydrophobic Coatings on Aluminum Substrate Based on Different Metal Oxides: Co3O4, ZnO, and MgO

IF 1.1 4区 材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING
Zehira Belamri
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Abstract

The formation of different nanostructured metal oxides, Co3O4, ZnO, and MgO, has been carried out by thermal oxidation at 500°C using a low-cost electroplating technique at ambient temperature. The structure and morphology of the elaborated layers, along with their hydrophobic properties, have been investigated using various surface characterization techniques such as X-ray diffraction (XRD), Raman spectroscopy, field emission gun scanning electron microscope (FEG-SEM), and EDX analysis. The wettability properties of the elaborated coating were evaluated by measuring the contact angle between the surface of the films and a deposited water drop (WCA). The obtained results suggest the existence of metal oxide phases after thermal oxidation at 500°C with a nanometric crystallite size. Structural characterization by XRD demonstrates that the synthesized thin films were polycrystalline. The Raman analysis shows normal vibrational modes, which correspond to the structure of each thin film. The morphological study of elaborated thin film coatings illustrates the formation of nanometric grains distributed uniformly on the surface of each thin film. The surface morphologies change throughout the oxide type. The best hydrophobicity with WCA of 136.93° is obtained for MgO coating with nanowire morphology.

Abstract Image

基于不同金属氧化物:Co3O4, ZnO和MgO的铝基疏水涂层
采用低成本电镀技术,在500℃的温度下制备了不同纳米结构的金属氧化物Co3O4、ZnO和MgO。利用各种表面表征技术,如x射线衍射(XRD)、拉曼光谱、场发射枪扫描电子显微镜(fg - sem)和EDX分析,研究了制备层的结构和形态,以及它们的疏水性。通过测量膜表面与沉积的水滴(WCA)之间的接触角来评价制备的涂层的润湿性。所得结果表明,在500℃热氧化后,金属氧化物相存在,晶粒尺寸为纳米级。XRD结构表征表明,合成的薄膜是多晶的。拉曼分析显示了正常的振动模式,这与每个薄膜的结构相对应。制备的薄膜涂层的形态学研究表明,纳米颗粒的形成均匀地分布在每个薄膜的表面。不同氧化物类型的表面形态不同。纳米线形态MgO涂层的疏水性最佳,WCA为136.93°。
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来源期刊
CiteScore
1.90
自引率
18.20%
发文量
90
审稿时长
4-8 weeks
期刊介绍: Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. The journal covers all related problems of modern physical chemistry and materials science, including: physicochemical processes at interfaces; adsorption phenomena; complexing from molecular and supramolecular structures at the interfaces to new substances, materials and coatings; nanoscale and nanostructured materials and coatings, composed and dispersed materials; physicochemical problems of corrosion, degradation and protection; investigation methods for surface and interface systems, processes, structures, materials and coatings. No principe restrictions exist related systems, types of processes, methods of control and study. The journal welcomes conceptual, theoretical, experimental, methodological, instrumental, environmental, and all other possible studies.
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