1. Design of functionalized α-Fe2O3 (III) films with long-term anti-wetting properties
- Author
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Binfang Yuan, Jianhua Xu, Huisheng Huang, Taotao Liang, Shuying Kong, Xiaogang Guo, Xueming Li, Fulan Zhang, and Daoling Fu
- Subjects
010302 applied physics ,Materials science ,Process Chemistry and Technology ,Oxide ,Liquid phase ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Contact angle ,Electrophoretic deposition ,chemistry.chemical_compound ,Chemical engineering ,chemistry ,visual_art ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Immersion (virtual reality) ,Relative humidity ,Ceramic ,Wetting ,0210 nano-technology - Abstract
The design of functional anti-wetting ceramic coatings is always a bottleneck restricting the development of ceramic techniques. This study proposes a liquid phase synthesis method to fabricate α-Fe2O3 (III) ceramic powders with promising applications and introduces a facile electrophoretic deposition (EPD) technique to construct the corresponding functionalized hydrophobic films – superhydrophobic functionalized α-Fe2O3 ceramic films (SFOFS) with roughly even distribution and a high water contact angle (CA) of 169°±1° – followed by heat posttreatments. The microtopography and crystalline structures of the product were investigated by FESEM, EDX, and XRD techniques. The EPD controllability of SFOFS was studied by adjusting the EPD time and the applied field strengths. In addition, the SFOFS show excellent long-term anti-wetting properties for twenty-four months after undergoing a series of tests, including soaking, water droplet impacting, immersion by droplets with different surface tensions and exposure to different gases and relative humidity conditions, etc. This study substantially helps the design of other kinds of functional anti-wetting films through the proposed convenient method beyond the oxide limit.
- Published
- 2020
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