钛合金表面纳米管直径对模拟月尘粘附性能的影响

  • 何俊 ,
  • 辛世刚 ,
  • 黄卿 ,
  • 焦海洋
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  • 中国科学院大学上海硅酸盐研究所

收稿日期: 2025-01-13

  修回日期: 2025-03-30

  网络出版日期: 2025-04-10

The effect of nanotube diameter on the adhesion of simulated lunar dust on titanium alloy surface

  • HE Jun ,
  • XIN Shi-Gang ,
  • HUANG Qing ,
  • JIAO Hai-Yang
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Received date: 2025-01-13

  Revised date: 2025-03-30

  Online published: 2025-04-10

摘要

月球尘埃在航天器表面的粘附严重威胁航天器的稳定运行。被动防尘技术通过表面纳米结构降低范德华力,无需额外能量具有巨大的应用潜力。本研究通过阳极氧化法在钛合金表面制备二氧化钛纳米管阵列,表征了表面的微观结构,测量了表面与单颗模拟月尘之间的粘附力以及暴露在模拟月尘的环境中时的模拟月尘粘附量。结果表明,与未处理的钛合金表面相比,单颗模拟月尘颗粒与表面之间的粘附力减少了87%,模拟月尘的粘附量减少了70%。通过调节电压可精确控制纳米管直径(50-110 nm),此范围内较小直径纳米管因接触面积最小化展现出更优异的防尘性能,与基于范德华力的理论模型预测一致。表面倾斜角减小或月尘暴露量增加会导致粘附量显著上升,实际应用中需协同优化表面结构与工况参数。

本文引用格式

何俊 , 辛世刚 , 黄卿 , 焦海洋 . 钛合金表面纳米管直径对模拟月尘粘附性能的影响[J]. 航空学报, 0 : 1 -0 . DOI: 10.7527/S1000-6893.2024.31803

Abstract

The adhesion of lunar dust on the surface of spacecraft seriously threatens the stable operation of spacecraft. Pas-sive dust-proof technology reduces van der Waals force through surface nanostructures, and has great application potential without additional energy. In this study, titanium dioxide nanotube arrays were prepared on the surface of titanium alloy by anodic oxidation. The microstructure of the surface was characterized. The adhesion between the surface and a single simulated lunar dust and the amount of simulated lunar dust adhesion when exposed to simu-lated lunar dust were measured. The results show that compared with the untreated titanium alloy surface, the ad-hesion between a single simulated lunar dust particle and the surface is reduced by 87 %, and the adhesion of simulated lunar dust is reduced by 70 %. The diameter of the nanotubes ( 50-110 nm ) can be precisely controlled by adjusting the voltage. In this range, the smaller diameter nanotubes exhibit better dust-proof performance due to the minimization of the contact area, which is consistent with the theoretical model prediction based on van der Waals force. The decrease of surface inclination angle or the increase of lunar dust exposure will lead to a signifi-cant increase in adhesion. In practical applications, it is necessary to collaboratively optimize surface structure and working parameters.

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