Lunar Dust-Mitigation Behavior of Aluminum Surfaces with Multiscale Roughness Prepared by a Composite Etching Method

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xiao Wang
  • Weidong Wang
  • Hong Shao
  • Shengmao Chao
  • Haiyan Zhang
  • Changyu Tang
  • Xiongyao Li
  • Yingmin Zhu
  • Ji Zhang
  • Xiaoping Zhang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)34020–34028
Journal / PublicationACS Applied Materials & Interfaces
Volume14
Issue number29
Online published12 Jul 2022
Publication statusPublished - 27 Jul 2022

Abstract

Reducing lunar dust adhesion to various material surfaces is important for protecting equipment from damage during lunar exploration missions. In this study, we investigate the lunar dust-mitigation ability and dust adhesion force of aluminum (Al) substrates prepared using different etching methods. Among them, composite etching methods (combining chemical and electrochemical steps) can result in multiscale structures with micro- and nanoroughness, reducing the contact area between the substrate and thus decreasing lunar dust adhesion. After composite etching, the dust adhesion force of the Al substrate was significantly reduced by 80% from 45.53 to 8.89 nN. The dust adhesion force of Al substrates dominates their dust-mitigation performance in floating dust environments. The lunar dust coverage (2.19%) of the Al substrate modified by composite etching (placed with a tilt angle of 90°) was 4-fold lower than that of the pristine Al substrate (9.11%), indicating excellent lunar-dust repellence. In addition, other factors such as tilt angle of the substrate and dust loading significantly affect dust-mitigation performance of the modified Al substrates. The Al substrate with an excellent dust-mitigation ability highlights good potential for lunar exploration missions.

Research Area(s)

  • lunar dust, multiscale structure, dust-mitigation, adhesion, aluminum, SOLAR-CELL, COATINGS, PERFORMANCE, ADHESION, REMOVAL

Citation Format(s)

Lunar Dust-Mitigation Behavior of Aluminum Surfaces with Multiscale Roughness Prepared by a Composite Etching Method. / Wang, Xiao; Wang, Weidong; Shao, Hong; Chao, Shengmao; Zhang, Haiyan; Tang, Changyu; Li, Xiongyao; Zhu, Yingmin; Zhang, Ji; Zhang, Xiaoping; Lu, Yang.

In: ACS Applied Materials & Interfaces, Vol. 14, No. 29, 27.07.2022, p. 34020–34028.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review