Forscher nutzten ein spezielles Laser-3D-Druckverfahren, um künstliche Monderde in Schichten zu schmelzen und mit einer Grundfläche zu verschmelzen, um kleine, hitzebeständige Objekte herzustellen, was laut einer neuen Studie möglicherweise den Weg für nachhaltigere und kostengünstigere Weltraummissionen ebnet.
https://news.osu.edu/using-moon-dirt-to-build-future-lunar-colonies/?utm_campaign=omc_science-medicine_fy26&utm_medium=social&utm_source=reddit
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Abstract: This study explores the feasibility of using laser directed energy deposition (LDED) additive manufacturing to make structures from lunar highland regolith simulants (LHS-1). The research investigates the fabrication process under varied ambient and inert conditions (oxygen lower than 150 ppm) and a range of laser powers and scanning speeds to optimize process parameters. X-ray diffraction (XRD) and microscopy show the microstructural characteristics and phase evolution of printed samples. Results demonstrate that the choice of substrate significantly impacts adhesion of a printed clad, with alumina-silicate ceramic as the optimal base substrate for printing. Morphological analysis reveals the formation of porous tubular structure under different processing conditions, indicating a strong correlation between laser power, scanning speed, and resultant microstructures. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses unveil distinct crystalline phases, including mullite and augite-plagioclase, formed under varying laser powers. Surface-resolved digital microscopy provides a comprehensive view of the printed samples, highlighting intricate structural features. This study establishes the optimal LDED parameters for producing mullite-rich microstructures. At higher temperatures, alumina and silica react to form a blocky mullite phase with smaller crystal gaps, enhancing thermal stability and mechanical strength. These findings provide crucial insights into the potential utilization of lunar regolith simulants with LDED technology, advancing the prospects of sustainable in-situ manufacturing for future lunar missions.
The idea of 3d printing a lunar base from materials found on the moon is super attractive. I hope this technology develops further.
With the recent advances in robotics and autonomy training, I have to wonder if we’re merely a few decades away from sending a few robots and watching them construct a significant portion of a lunar base, rather than having to send up prefabs