研究用于月球原位施工的真空烧结BH-1月球风化模拟材料的微观、力学和热性能

IF 6.5 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Yu Jiang , Feng Li , Siqi Zhou , Li Liu
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引用次数: 0

摘要

月球基地的建立是长期深空探测的关键。考虑到地月运输的高成本,原位资源利用(ISRU)已成为最可行的月球建设方法。本文研究了BH-1模拟月球风化层(LRS)在不同温度的真空环境下的烧结行为。采用x射线衍射(XRD)、扫描电镜(SEM)、纳米压痕、单轴压缩和热性能测试对烧结样品进行了表征,以评估其显微组织、力学和热性能。结果表明,烧结温度对试样的显微组织和机械强度均有显著影响。在1100℃的烧结温度下,抗压强度最大可达90 MPa。在不同烧结温度下,烧结样品的矿物组成基本保持不变,主要表现在相的XRD峰强度上。斜长石首先熔化,并以熔融液相的形式填充粒间孔隙。在- 150°C至150°C的温度范围内,BH-1 LRS具有较低的热膨胀系数(CTE),表明其具有抵抗温度波动引起的疲劳损伤的潜力。这些发现为原位固结月球风化层和利用当地资源建设月球基地提供了技术支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigating the microscopic, mechanical, and thermal properties of vacuum-sintered BH-1 lunar regolith simulant for lunar in-situ construction
The lunar base establishing is crucial for the long-term deep space exploration. Given the high costs associated with Earth-Moon transportation, in-situ resource utilization (ISRU) has become the most viable approach for lunar construction. This study investigates the sintering behavior of BH-1 lunar regolith simulant (LRS) in a vacuum environment across various temperatures. The sintered samples were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM), along with nanoindentation, uniaxial compression, and thermal property tests to evaluate the microstructural, mechanical, and thermal properties. The results show that the sintering temperature significantly affects both the microstructure and mechanical strength of the samples. At a sintering temperature of 1100°C, the compressive strength reached a maximum of 90 MPa. The mineral composition of the sintered samples remains largely unchanged at different sintering temperatures, with the primary differences observed in the XRD peak intensities of the phases. The plagioclase melting first and filling the intergranular pores as a molten liquid phase. The BH-1 LRS exhibited a low coefficient of thermal expansion (CTE) within the temperature range of −150°C to 150°C, indicating its potential for resisting fatigue damage caused by temperature fluctuations. These findings provide technical support for the in-situ consolidation of lunar regolith and the construction of lunar bases using local resources.
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来源期刊
CiteScore
7.60
自引率
19.40%
发文量
842
审稿时长
63 days
期刊介绍: Case Studies in Construction Materials provides a forum for the rapid publication of short, structured Case Studies on construction materials. In addition, the journal also publishes related Short Communications, Full length research article and Comprehensive review papers (by invitation). The journal will provide an essential compendium of case studies for practicing engineers, designers, researchers and other practitioners who are interested in all aspects construction materials. The journal will publish new and novel case studies, but will also provide a forum for the publication of high quality descriptions of classic construction material problems and solutions.
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