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| Investigation on vacuum sintering properties of HLS-J simulated highland lunar soil |
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Received:October 21, 2025
Revised:October 21, 2025
Accepted:October 27, 2025
Published Online:April 30, 2026
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| DOI：10.3969/j.issn.1005-7854.2026.01.010 |
| KeyWord:simulated lunar soil;vacuum sintering;mechanical properties;microstructure;in-situ resource utilization |
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| 1.State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;2.Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China |
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| Abstract: |
| The construction of a lunar base plays a critical role in enabling deep-space exploration. Due to the high cost and logistical challenges associated with transporting materials from Earth to the Moon, in-situ resource utilization (ISRU) has emerged as a promising and practical approach for lunar base development. In this study, HLS-J highland lunar regolith simulant was used as the raw material to investigate its sintering behavior under vacuum conditions at three different temperatures: 970 ℃, 1 030 ℃, and 1 090 ℃. The effects of sintering temperature on the thermodynamic behavior, phase evolution, microstructure, and mechanical properties of the simulant were systematically examined. Characterization techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC) were employed to analyze the phase composition, microstructural features, and thermal behavior of the sintered specimens. In addition, uniaxial compression tests were conducted to evaluate their mechanical performance. The results indicated that within the temperature range of 970–1 090 ℃, the density of the sintered specimens first increased and then decreased with rising temperature. The optimal sintering temperature was identified as 1 030 ℃, at which the specimens achieved a maximum average compressive strength of 108.64 MPa and the highest relative density of 73.43%. |
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