Incident-angle dependence of deformation characteristics of aluminum surface under low-energy xenon-ion impact

Author:

Zhang Cheng,Zhou Jiang,Xie Wenkai

Abstract

Abstract Ion thruster is a revolution technology with potential applications in space mission but the thruster’s operation lifetime is limited by the sputtering from thruster components. In this work, molecular dynamic simulations are performed to explore the dependence of deformation characteristics of an aluminum surface on incident angle and kinetic energy under low-energy xenon-ion impact. The fraction of non-12-coordinated atoms is used to quantitatively characterize the microstructural evolution and defect density levels. It is found that defect density level has a linear relation with incident energy, and there exists a critical incident angle around 20°, at which the aluminum surface has the maximum defect density level. In addition, a collision model is developed to theoretically reveal the physical mechanisms behind the dependence. Our findings may helpful in developing long endurance electric propulsion devices for practical applications.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

Reference23 articles.

1. Recent progress and perspectives of space electric propulsion systems based on smart nanomaterials;Levchenko;Nat. Commun.,2018

2. A review of low-power electric propulsion research at the space propulsion centre Singapore;Potrivitu;Aerospace,2020

3. A study in reducing the cost of vertical flight with electric propulsion;Duffy;17th AIAA Aviat. Technol. Integr. Oper. Conf.,2017

4. A cost-effective and emission-aware power management system for ships with integrated full electric propulsion;Kanellos;Electr. Power Syst. Res.,2017

5. State-of-the-art and advancement paths for inductive pulsed plasma thrusters;Polzin;Aerospace,2020

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3