YUAN Ying *.Preparation of Superhydrophobic Composite Film on Magnesium Alloy and Its Corrosion Resistance and Self-Cleaning Performance[J].Plating & Finishing,2022,(8):38-43.[doi:10.3969/j.issn.1001-3849.2022.08.007]
镁合金表面超疏水复合膜层制备及其耐腐蚀、自清洁性能研究
- Title:
- Preparation of Superhydrophobic Composite Film on Magnesium Alloy and Its Corrosion Resistance and Self-Cleaning Performance
- Keywords:
- superhydrophobic composite film ; magnesium alloy ; wettability performance ; self-cleaning performance ; corrosion resistance
- 分类号:
- TG174.4
- 文献标志码:
- A
- 摘要:
- 采用锌系磷化工艺结合溶胶—凝胶法，先在镁合金基体表面制备一层锌系磷化膜，然后通过涂覆改性 SiO 2 溶胶固化后获得出超疏水复合膜层。采用扫描电镜、能谱仪、接触角测量仪、电化学工作站并通过对比实验，对复合镀层的表面形貌、成分、润湿性能、自清洁性能和耐腐蚀性能进行测试分析。结果表明：复合镀层表面表面形成微纳米结构呈现超疏水状态，静态接触角达到 151.67° ，主要成分为 Zn 、 P 、 O 、 Si 和 C 元素。复合膜层具有良好的自清洁性能及抗酸碱腐蚀能力，其电荷转移电阻和膜层电阻相比于镁合金基体分别提高约 4.6 倍和 3.2 倍，对镁合金基体的保护效率为 82.1% ，能有效抑制镁合金基体腐蚀同时保护其免受污染。
- Abstract:
- ： A zinc phosphating film was prepared on magnesium alloy substrate ， and then a super-hydrophobic composite film was obtained through coating modified SiO 2 sol after curing using zinc phosphating process combined with sol-gel method. The surface morphology ， components ， wettability performance ， self-cleaning performance and corrosion resistance of the composite coating were tested and analyzed by scanning electron microscope ， energy dispersive spectrometer ， contact angle measuring instrument ， electrochemical workstation and through comparative experiments. The results show that the composite coating is in superhydrophobic state with micro-nano structure ， the static contact angle reaches 151.67° ， and the main components are Zn ， P ， O ， Si and C elements. The composite film has good self-cleaning performance and acid and alkali corrosion resistance ， its charge transfer resistance and film resistance are increased by about 4.6 times and 3.2 times respectively compared with magnesium alloy substrate ， and the protection efficiency for magnesium alloy substrate is 82.1%. The composite film can effectively inhibit the corrosion of magnesium alloy substrate and protect it from pollution.
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备注/Memo
收稿日期： 2022-01-17 修回日期： 2022-03-14 作者简介： 袁英（ 1986 －），女，硕士，讲师，主要研究方向为材料工程， email ： teacher_yuan7577@126.com 基金项目： 江西省教育厅科技项目（ GJJ202910 ）