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黄雪刚,殷春,茹红强,邓勇军,郭运佳,罗庆,陈辉,柳森.B4C-Al基复合材料的空间碎片超高速撞击防护应用研究[J].稀有金属材料与工程(英文),2020,49(2):487~493.[Xuegang Huang,Chun Yin,Hongqiang Ru,Yongjun Deng,Yunjia Guo,Qing Luo,Hui Chen and Sen Liu.Investigation on Shielding Application of B4C-Al based Composite for Hypervelocity Impact of Space Debris[J].Rare Metal Materials and Engineering,2020,49(2):487~493.]
Investigation on Shielding Application of B4C-Al based Composite for Hypervelocity Impact of Space Debris
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Received:March 21, 2019  Revised:April 22, 2019
DOI:
Key words: B4C-Al  space debris  hypervelocity impact  damage behavior  debris cloud
Foundation item:国家自然科学基金(61873305,51502338),四川省科技计划项目(2018JY0410,2019YJ0199),绵阳市科技计划项目(17YFCL004),HIRC开放基金(20190101)
Author NameAffiliation
Xuegang Huang,Chun Yin,Hongqiang Ru,Yongjun Deng,Yunjia Guo,Qing Luo,Hui Chen and Sen Liu  
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Abstract:
      In order to improve the shielding ability of spacecraft against space debris hypervelocity impact, the B4C-Al based composites prepared by pressureless presintering and aluminium infiltration in vacuum were designed as the front bumper of Whipple shielding configuration, and the hypervelocity impact tests were carried out on a hypervelocity impact range to evaluate the shielding performance of B4C-Al bumper and Al alloy bumper under the impact velocity of 3 km/s ~ 6.5 km/s. By comparising the bumper penetration, the rear wall damage state and the debris clould structure of the two different bumper materials under various impact velocity as well as the SEM and EDS results, the relationship among the bumper material properties, the cratering mechanics of rear wall and the debris cloud characteristics was discussed. The research results indicated that the B4C-Al bumper can break the projectile into smaller pieces and even make the debris melt, and the impact damage of debris cloud on rear wall was alleviated significantly, meanwhile, the good toughness of Al metallic phase can keep this bumper structure intact. Hence, both the pulverized small debris and the decreased impact kinetic concentration of debris cloud are the main reasons to obtain higher shielding capability of B4C-Al bumper. This primary investigation provided theoretical and technical instructions for the design and application of B4C-Al based composite materials in space debris shielding configuration.