马宁,张鑫宇,孙岩,龙芳宇,孙凯伦.化学刻蚀-阳极氧化复合制备钛合金超疏水表面试验研究[J].表面技术,2023,52(12):197-205, 273.
MA Ning,ZHANG Xin-yu,SUN Yan,LONG Fang-yu,SUN Kai-lun.Experimental Study on the Preparation of Superhydrophobic Titanium Alloy Surfaces via Combined Chemical Etching-Anodization Method[J].Surface Technology,2023,52(12):197-205, 273 |
| 化学刻蚀-阳极氧化复合制备钛合金超疏水表面试验研究 |
| Experimental Study on the Preparation of Superhydrophobic Titanium Alloy Surfaces via Combined Chemical Etching-Anodization Method |
| 投稿时间：2023-08-16 修订日期：2023-11-29 |
| DOI：10.16490/j.cnki.issn.1001-3660.2023.12.018 |
| 中文关键词: TC4 化学刻蚀 阳极氧化 超疏水 防冰 微纳分级结构 |
| 英文关键词:TC4 chemical etching anodic oxidation superhydrophobic anti-icing micro-nano hierarchical structure |
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| Author | Institution |
| MA Ning | School of Mechatronic Engineering, Shenyang Aerospace University, Shenyang 110136, China |
| ZHANG Xin-yu | School of Mechatronic Engineering, Shenyang Aerospace University, Shenyang 110136, China |
| SUN Yan | School of Mechatronic Engineering, Shenyang Aerospace University, Shenyang 110136, China |
| LONG Fang-yu | School of Mechatronic Engineering, Shenyang Aerospace University, Shenyang 110136, China |
| SUN Kai-lun | School of Mechatronic Engineering, Shenyang Aerospace University, Shenyang 110136, China |
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| 中文摘要: |
| 目的 提高TC4钛合金超疏水表面的疏水性、耐腐蚀性与力学性能。方法 首先选择化学刻蚀法对TC4钛合金进行处理制备出微米级结构，再采用阳极氧化法制备出纳米级结构，最终在试样表面制备出了具有微纳分级结构的超疏水表面。通过观察微观结构表面、Tafel测试、线性磨损试验、抗冲击性测试以及防冰性能测试，分别对H2O2刻蚀、强酸刻蚀、阳极氧化、H2O2刻蚀-阳极氧化和强酸刻蚀-阳极氧化制备的超疏水表面进行性能对比。结果 使用双氧水-碳酸氢钠混合溶液制备出的超疏水表面接触角为156.4°，滚动角为2.7°;硫酸-盐酸混合溶液制备出的超疏水表面接触角为153.1°，滚动角为7.6°;阳极氧化法制备的超疏水表面接触角为156.3°，滚动角为4.2°;双氧水-碳酸氢钠混合溶液刻蚀并阳极氧化处理后，表面接触角为157.6°，使用硫酸-盐酸混合溶液刻蚀并阳极氧化处理后，表面接触角为155.9°，二者滚动角均小于2°。复合方法制备的表面疏水性能优于单一方法制备的超疏水表面。超疏水试样的OCP都高于TC4钛合金，经过强酸刻蚀和阳极氧化处理后的超疏水试样，其OCP正移到0.08 V，Jcorr降低了1个数量级，Rp增大了1个数量级，耐腐蚀性能明显提高。复合方法制备的超疏水表面在经过多次线性磨损以及经历200 g落沙冲击后，表面接触角仍能保持150°以上，滚动角为10°左右，仍保持了超疏水性能。结论 采用复合方法制备的具有微纳分级结构的超疏水表面相较于单一结构的超疏水表面具有更好的疏水性、耐腐蚀性、耐磨损性和抗冲击性。 |
| 英文摘要: |
| TC4 titanium alloy has low density, corrosion resistance, high strength ratio, good fracture toughness and other characteristics, so it is widely used in the aerospace field. When the aircraft passes through the low-temperature cloud in the air, the intake part of the engine will freeze due to the existence of supercold water droplets, which will affect the flight safety. Therefore, it is particularly important to prepare superhydrophobic surface on TC4 titanium alloy. In order to improve the hydrophobicity, corrosion resistance and mechanical properties of the superhydrophobic surface of TC4 titanium alloy, a combined method of chemical etching and anodic oxidation was proposed to prepare the superhydrophobic surface. Firstly, TC4 titanium alloy was treated with chemical etching to prepare micron-scale structure, and then nano-scale structure was prepared by anodic oxidation method. Finally, superhydrophobic surface with micro-nano structure was prepared on the surface of the sample. The superhydrophobic surfaces prepared by H2O2 etching, strong acid etching, anodic oxidation, H2O2 etching-anodic oxidation and strong acid etching-anodic oxidation were compared by Tafel test, linear wear test, impact resistance test and anti-icing performance test respectively. It can be seen from the experimental results that the contact angle of the superhydrophobic surface prepared by the mixed solution of hydrogen peroxide and sodium bicarbonate is 156.4° and the rolling angle is 2.7°. The contact angle of the superhydrophobic surface prepared by the mixed solution of sulfuric acid and hydrochloric acid is 153.1° and the rolling angle is 7.6°. The contact angle of the superhydrophobic surface prepared by anodic oxidation is 156.3° and the rolling angle is 4.2°. The surface contact angle is 157.6° after etching with hydrogen peroxide and sodium bicarbonate mixed solution and anodizing treatment, and 155.9° after etching with sulfuric acid and hydrochloric acid mixed solution and anodizing treatment, and the rolling angle of both is less than 2°. Scanning electron microscopy (SEM) is used to observe the microscopic morphology of the superhydrophobic surface prepared by the five methods. It can be seen that the superhydrophobic surface prepared by the combined method presents a micro-nano hierarchical structure, which effectively reduces the contact area between the water droplets and the surface and significantly reduces the rolling angle. Therefore, the hydrophobic property of the surface prepared by the method method is superior to that prepared by a single method. The OCP of superhydrophobic samples is higher than that of TC4 titanium alloy. Especially the OCP of superhydrophobic samples after strong acid etching and anodic oxidation treatment is moving to 0.08 V, and the corrosion resistance is significantly improved. According to the polarization curve, the Jcorr of the superhydrophobic surface prepared by the combined method is reduced by one order of magnitude, and the Rp is increased by one order of magnitude, which also indicates that the corrosion resistance has been greatly improved. The superhydrophobic surface prepared by the combined method can still maintain the contact angle above 150° and the rolling angle about 10° after several linear wear and 200 g sand fall impact, and still maintain the superhydrophobic property. Therefore, the superhydrophobic surface with micro-nano hierarchical structure prepared by combined chemical etching-anodizing method has better hydrophobicity, corrosion resistance, wear resistance and impact resistance than the superhydrophobic surface with a single structure. |
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