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Cylindrical specimens of Martian and Lunar regolith simulants were moldedusing a salt water binder and sintered at various temperatures for comparingmicrostructure, mechanical properties and shrinkage. Material microstructureare reported using optical microscope and material testing is done using an MTSuniversal testing machine. The experimental protocol was executed twice, onceusing Mars global simulant (MGS-1), and once using Lunar mare simulant (LMS-1).The specimens were fabricated via an injection molding method, designed toreplicate typical masonary units as well as the green stage of Binder JetTechnique, an important additive manufacturing (AM) technique. Results showthat for both the Martian and Lunar regolith that the optimal sinteringtemperature was somewhere between 1100 C and 1200 C. The compressive strengthfor both the Martian and Lunar masonary samples, that received optimalsintering conditions, was determined to be sufficient for construction ofextraterrestrial structures. The work demonstrates that both the Martian andLunar regolith show potential to be used as extra terrestrial masonary and asparent material for extra terrestrial BJT additive manufacturing processes.

Effect of Sintering Temperature on Microstructure and Mechanical Properties of Molded Martian and Lunar Regolith