铝金属基底月尘被动防护表面研究  

The investigation on lunar dust passive protection of aluminum surface

作　　者：张海燕 王晓 李思新 王鹢[2] 王永军[2] 李存惠[2] 王卫东[1] 朱应敏[1] 张骥 ZHANG Haiyan;WANG Xiao;LI Sixin;WANG Yi;WANG Yongjun;LI Cunhui;WANG Weidong;ZHU Yinmin;ZHANG Ji(School of Mechano-Electronic Engineering,Xidian University,Xi’an 710071,China;Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)

机构地区：[1]西安电子科技大学机电工程学院,西安710071 [2]兰州空间技术物理研究所真空与低温重点实验室,兰州730000

出　　处：《空间电子技术》2022年第6期85-90,共6页Space Electronic Technology

基　　金：国家自然科学基金(编号:42004157);真空与低温重点实验室基金(编号:6142207200202);甘肃省自然科学基金(编号:21JR7RA743)。

摘　　要：月尘是探月任务中遇到的极大环境因素,对探月设备的粘附是影响其功能实现甚至重要部件失效的主要因素。月尘与铝金属基底粘附力可优化项为范德华力。针对以上理论结果,通过电化学刻蚀结合低表面能涂覆设计了一种月尘防护表面。通过控制防护表面制备过程中的时间和工艺得到不同粗糙度和表面能的防护样品,最终得出所制备样品的最优表面能为22.52 mJ/m^(2),表面粗糙度为2.444μm。通过翻转测试得到翻转角度为60°时的月尘防护效率为58.41%。经测试,通过电化学刻蚀得出的样品,继续增加电化学刻蚀时间和电流,表面粗糙度继续增大,月尘容易卡在微结构中,并不能继续提高月尘防护效率。研究得出的月尘被动防护技术可以广泛应用于未来深空探测任务的部组件防护。针对不同的防护表面,后续可开展效果优良的防尘表面研究,本方法比主动月尘防护方法节省在轨电源损耗。Lunar dust is the biggest problem met in lunar exploration.The deposited lunar dust on lunar exploration equipment will affect their function or even let them lose efficiency.This study firstly analyses the main adhesion force is Van Der Waals Force.Thus,in order to protect lunar equipment from lunar harzards,a low surface energy and micro structure surface should be designed.In this paper,this protect surface is obtained through electrochemical etching on condition of different electrical density and time.Finally,the best efficient protect surface with surface energy of 22.52 mJ/m^(2)and with surface roughness of 2.444μm is obtained and its lunar dust protection efficiency is 58.41%when the rotation angle is 60°,which reveals that lunar dust passive protection method can be widely used in future deep space exploration.Through test,the samples has bigger roughness when the etching time and current increase using electrochemical etching,which may get lunar dust stuck in microstructure and therefore decrease lunar dust protection efficiency.In future,we are prepared to design high efficient lunar dust passive protection surfaces for different protected instrument surface,which will save much energy than active lunar dust protection method.

关 键 词：月尘 粘附特性 表面改性 月尘被动防护 

分 类 号：V443[航空宇航科学与技术—飞行器设计]