Sintering of lunar regolith structures fabricated via digital light processing |
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| Affiliation: | 1. CAS Key Laboratory of Space Manufacturing Technology, Chinese Academy of Sciences, Beijing, 100190, People''s Republic of China;2. University of Chinese Academy of Sciences, Beijing, 100049, People''s Republic of China;1. Wolfson School of Mechanical, Electrical & Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom;2. College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom;3. Mechanical Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom;1. Honeybee Robotics, 398 W. Washington Blvd. Suite 200., Pasadena, CA 91101, USA;2. Department of Mechanical and Aerospace Engineering, Rutgers University, 98 Brett Rd, Piscataway, NJ 08854, USA;1. School of Civil, Environmental and Mining Engineering and Andy Thomas Centre for Space Resources, University of Adelaide;2. School of Chemical Engineering and Advanced Materials;1. Northwestern University, Department of Materials Science and Engineering, 2200 Campus Dr. Cook 2036, Evanston, IL 60208, USA;2. Simpson Querrey Institute for BioNanotechnology in Medicine, 303 E. Superior, Suite 11-131, Chicago, IL 60611, USA;3. Department of Surgery (Transplant Division), Northwestern University, 251 E. Huron St. Galter 3-150, Chicago, IL 60611, USA;1. Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Unità di Ricerca del Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM) - Università degli Studi di Cagliari, via Marengo 2, 09123 Cagliari, Italy;2. CNR-INO Istituto Nazionale di Ottica, Largo E. Fermi 6, I-50125 Firenze, Italy;3. Istituto Nazionale di Astrofisica (INAF), Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy |
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| Abstract: | Architectural and functional structures composed of lunar regolith-simulant CLRS-2 were fabricated via digital light processing and sintered at 1100 °C and 1150 °C under an air or argon atmosphere. This work is to investigate effects of atmosphere and temperature on mechanical properties, microstructure, and chemical composition of lunar regolith products. Samples sintered at 1150 °C in air underwent the highest sintering shrinkage and showed the best mechanical properties, likely due to the formation of glassy phase and dense structure following sintering. Conversely, argon-sintered samples exhibited lower density resulting from the lack of glassy phase. Phase analysis revealed varying chemical composition and therefore different underlying reaction mechanisms under two sintering atmospheres, indicating that sintering atmosphere significantly influences the microstructure and macroscopic properties of lunar regolith products. |
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| Keywords: | Lunar regolith Digital light processing Additive manufacturing Mechanical properties |
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