Microstructural, mechanical, and thermal properties of microwave-sintered KLS-1 lunar regolith simulant
Open accessAbstract
KLS-1 Lunar regolith simulant was microwave sintered to explore its potential applicability in future lunar construction. The effects of sintering temperature on linear shrinkage, density, porosity, and microstructural, mechanical, and thermal properties were investigated. As the sintering temperature increased, linear shrinkage and density increased and porosity decreased. Structural evolution in the sintered samples was characterized by scanning electron microscopy and X-ray diffraction. Unconfined compressive strength testing showed that mechanical strength increased significantly with increasing sintering temperature, with 1120 °C giving the highest strength of 37.0 ± 4.8 MPa. The sintered samples exhibited a coefficient of thermal expansion of approximately 5 × 10−6 °C−1, which was well-maintained even after cyclic temperature stress between −100 and 200 °C. Therefore, this microwave processing appears promising for the fabrication of building material with sufficient mechanical strength and thermal durability for lunar construction.
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Microwave heating is a promising method for thermal post-treatment to alter the microstructure and mechanical properties of pre-sintered materials.
“This characteristic makes microwave heating a promising method for thermal post-treatment to alter the microstructure and mechanical properties of pre-sintered materials [170,171].”
From A comprehensive review of lunar-based manufacturing and construction (2024) · cites this paper as [171]
The Results and discussion section reports that microwave sintering of KLS-1 powder changed its porosity and mechanical strength as sintering temperature increased. The paper describes initial sintering of powder for lunar construction, not thermal post-treatment of pre-sintered materials; that application is not supported by this source. Page numbers were not available in our copy. (LLM, conf=0.87)
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References 46 · Cited by 91
Research works printed but not linked: 1
- G. Heiken, D. Vaniman, B. French, Lunar Sourcebook, Cambridge University Press, New York, 1991.
- Authors
- Kim, Y.-J., Ryu, B. H., Jin, H., Lee, J., & Shin, H.-S.
- Affiliations
- Korea Institute of Civil Engineering and Building Technology (KR)
- Corresponding author
- Kim, Young-Jae
- Venue
- Ceramics International
- Publisher
- Elsevier BV
- Published
- 2021-10
- Volume
- 47
- Issue
- 19
- Pages
- 26891-26897
- ISSN
- 0272-8842 (ISSN-L)
- OpenAlex
- W3176280739
- Cited by
- 91
- References
- 46
- Citations by year
- 2026: 20 · 2025: 25 · 2024: 27 · 2023: 10 · 2022: 8 · 2021: 1
- FWCI
- 5.49
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Ceramics International (publishedVersion, cc-by-nc-nd)
- Funders
- Korea Institute of Construction Technology (20210190-001)
- Topics
- Physical Sciences › Materials Science › Ceramics and Composites › Advanced ceramic materials synthesis
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
- Physical Sciences › Engineering › Building and Construction › Recycling and utilization of industrial and municipal waste in materials production
- Keywords
- microwave sintering, lunar construction, sintering temperature, linear shrinkage, porosity, unconfined compressive strength, coefficient of thermal expansion, cyclic thermal stress, microstructure, building materials
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