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<p>Lunar soil simulants (LSSs) are terrestrial materials synthesized in order to mimic the aspects of lunar soil which is crucial to the emulating test technology for building a permanently manned lunar base. Here, we prepare a set of high-fidelity LSSs called by Beihang-3 (BH-3) through systematically studying the morphological, chemical composition, mineralogical, and crystallographic of lunar basalt fragments returned by Chang’e-5 (CE-5). BH-3, with a median particle size difference of less than 10 µm compared to CE-5 lunar soil, is composed of clinopyroxene, plagioclase, olivine, and ilmenite whose crystal structures match those of CE-5 lunar soil, exhibiting comparable Raman spectral characteristics. In addition, the oxide content of Si, Fe, Al, Ca, Ti, and Mg in BH-3 deviates by less than ±5% from the average composition of CE-5 samples. This compositional and structural similarity makes BH-3 a thermophysical-equivalent simulant, exhibiting heat-related properties analogous to those of CE-5 lunar soil. Furthermore, the compressive strength of sintered BH-3 specimens increases by 401% when the sintering temperature increases from 1100°C to 1175°C, while the porosity decreases by 17.3%. The compressive strength of sintered high-fidelity LSS is comparable to high-strength concrete used in Earth construction, making it sufficient to support <i>in-situ</i> lunar construction.</p>

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Sintering of Chang’e-5 high-fidelity lunar soil simulant for providing high-strength materials for lunar base construction

  • 期刊论文

  • 发表日期：

    2025年7月17日

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  • Siqi Zhou,
  • Zhiqian Lin,
  • Xinyang Tao,
  • Wanpeng Li,
  • Baodong Chen,
  • Feng Li,
  • Yaqi Li,
  • Yi Du,
  • Yu Jiang,
  • Yutong Deng

摘要

Lunar soil simulants (LSSs) are terrestrial materials synthesized in order to mimic the aspects of lunar soil which is crucial to the emulating test technology for building a permanently manned lunar base. Here, we prepare a set of high-fidelity LSSs called by Beihang-3 (BH-3) through systematically studying the morphological, chemical composition, mineralogical, and crystallographic of lunar basalt fragments returned by Chang’e-5 (CE-5). BH-3, with a median particle size difference of less than 10 µm compared to CE-5 lunar soil, is composed of clinopyroxene, plagioclase, olivine, and ilmenite whose crystal structures match those of CE-5 lunar soil, exhibiting comparable Raman spectral characteristics. In addition, the oxide content of Si, Fe, Al, Ca, Ti, and Mg in BH-3 deviates by less than ±5% from the average composition of CE-5 samples. This compositional and structural similarity makes BH-3 a thermophysical-equivalent simulant, exhibiting heat-related properties analogous to those of CE-5 lunar soil. Furthermore, the compressive strength of sintered BH-3 specimens increases by 401% when the sintering temperature increases from 1100°C to 1175°C, while the porosity decreases by 17.3%. The compressive strength of sintered high-fidelity LSS is comparable to high-strength concrete used in Earth construction, making it sufficient to support in-situ lunar construction.