微纳结构对阳极氧化铝超滑表面长期耐蚀性的影响机制研究

doi:10.11902/1005.4537.2023.154

中国腐蚀与防护学报

2023, Vol. 43

Issue (4): 773-780 CSTR: 32134.14.1005.4537.2023.154 DOI: 10.11902/1005.4537.2023.154

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微纳结构对阳极氧化铝超滑表面长期耐蚀性的影响机制研究

胡倩, 高佳仪, 郭瑞生, 史俊勤, 王显宗(

)

西北工业大学先进润滑与密封材料研究中心西安 710072

Long-term Corrosion of Lubricant Infused Surface with Micro-nano Structures on Anodized Aluminum Oxide

HU Qian, GAO Jiayi, GUO Ruisheng, SHI Junqin, WANG Xianzong(

)

Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi'an 710072, China

全文: PDF(7668 KB) HTML

摘要:

通过调控Al的阳极氧化工艺并填充润滑油，制备了3种不同微纳结构的超滑表面。采用扫描电子显微镜 (SEM)、接触角测量、电化学阻抗谱 (EIS) 测试和计算模拟等方法研究了阳极氧化铝 (AAO) 微纳结构对超滑表面疏水性、耐蚀性和稳定性的影响。结果表明，相比于纳米孔和纳米扩孔结构，纳米线结构超滑表面在模拟海水中持续浸泡240 d后的EIS阻抗模值 (|Z|_{0.01 Hz}) 仍稳定在10⁸ Ω∙cm²。理论分析显示，纳米线结构可储存更多的润滑油，并且致密线结构的阻拦效应及其与润滑油高的相互作用能显著减缓润滑油的流失，因而纳米线结构超滑表面表现出极为优异的耐蚀稳定性。

关键词 ：微纳结构, 阳极氧化铝, 超滑表面, 耐腐蚀性, 稳定性

Abstract：

Three double-layered lubricant infused surface (LIS) with different micro-nano structures (nanopores, enlarged nanopores, nanowires) on high purity Al-plates were prepared through anodizing for different times, and then filled with PAO oil. The effect of the structure of anodizing oxide films on the hydrophobicity, corrosion resistance, and stability of the prepared LISs were characterized by scanning electron microscopy (SEM), contact angle measurements, electrochemical impedance spectroscopy (EIS), and corrosion test in simulated seawater. The results showed that the |Z|_{0.01 Hz} of nanowires-LIS was still stable at 10⁸ Ω∙cm² after immersion in 1 mol/L NaCl for 240 d, showing more stable in long-term immersion corrosion test rather than the nanopores- and enlarged nanopores-LISs. Theoretical analysis showed that the nanowires-structure could store more PAO oil, and the blocking effect of its compact structure and high interaction energy with the oil greatly slow down the loss of PAO, so that the nanowires-LIS showed improved corrosion resistance and stability.

Key words： micro-nano structure anodizing anodized aluminum oxide (AAO) lubricant infused surface (LIS) corrosion resistance stability

收稿日期: 2023-05-09 32134.14.1005.4537.2023.154

ZTFLH:

TG172

基金资助:国家自然科学基金(51901188);中央高校基本科研业务费专项资金

通讯作者: 王显宗，E-mail: xianzong.wang@nwpu.edu.cn，研究方向为耐腐蚀涂层和合金、腐蚀磨损

Corresponding author: WANG Xianzong, E-mail: xianzong.wang@nwpu.edu.cn

作者简介: 胡倩，女，1999年生，硕士生
王显宗，1987 年出生，2018 年毕业于加拿大阿尔伯塔大学，获博士学位。现就职于西北工业大学，副教授，博士生导师。王显宗博士主要研究方向为氢能、核工程材料的腐蚀与防护，围绕防护涂层、耐蚀合金开展了系列研究。开发了C/Ti 耐腐蚀导电涂层应用于氢燃料电池，已通过应用单位性能验证，目前正开发商用的C/Ti 金属双极板。研发了两种单件重量超过800 kg、耐蚀性能优异锆合金，推动了国家大规模乏燃料 (辐照核燃料) 后处理锆合金溶解器的建设。开发了高流速、高温铅铋冲刷腐蚀测试装置，温度和流速等参数指标处于国际领先水平，促进了我国第四代核能铅冷快堆冲刷腐蚀装置的建设。先后主持国家国防科工局后处理专项子课题、国家自然科学基金青年项目等8 个纵向项目和4 个横向项目。在Corrosion Science 等期刊发表20 余篇。兼任中国腐蚀与防护学会磨蚀与防护技术专委会、缓蚀剂与水处理专委会委员，中国海洋湖藻学会海洋腐蚀与污损专委会副秘书长，同时兼任《中国腐蚀与防护学报》、《中南大学学报 (英文版)》、《矿物冶金和材料学报 (英文版)》和《工程科学学报》等中英文期刊青年编辑。2023 年获得中国腐蚀与防护学会杰出青年成就奖。

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引用本文:

胡倩, 高佳仪, 郭瑞生, 史俊勤, 王显宗. 微纳结构对阳极氧化铝超滑表面长期耐蚀性的影响机制研究[J]. 中国腐蚀与防护学报, 2023, 43(4): 773-780.
HU Qian, GAO Jiayi, GUO Ruisheng, SHI Junqin, WANG Xianzong. Long-term Corrosion of Lubricant Infused Surface with Micro-nano Structures on Anodized Aluminum Oxide. Journal of Chinese Society for Corrosion and protection, 2023, 43(4): 773-780.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2023.154 或 https://www.jcscp.org/CN/Y2023/V43/I4/773

图1 涂层制备流程图

图2 不同结构AAO模板的SEM图

图3 超疏水和超滑表面的接触角和滑动角

图4 新鲜超疏水和超滑表面的电化学阻抗谱

图5 不同结构超滑表面不同时间浸泡后的电化学阻抗谱

图6 不同结构超滑表面长时间浸泡后的|Z|0.01 Hz变化曲线

图7 超滑表面在浸泡后的接触角和滑动角

图8 超滑表面在浸泡前和浸泡后的SEM图

图9 AAO模板填充润滑油模拟结果

图10 超滑表面相互作用能

图11 超滑表面长期浸泡中耐蚀性变化的原理示意图

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