WenBin Han, LieYun Ding, Cheng Zhou, Yan Zhou, Fen Dang
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引用次数: 0
摘要
目前正在努力在月球上建立一个永久性的月球基地。预计原地月球碎石在烧结后可用作建筑材料。然而,将月球熔岩烧结成大型结构是一项挑战。因此,月球建设的关键在于将多个小型烧结模块组装成一个稳定的大型结构。本研究探索了使用激光设备焊接烧结的哈工大-1 号月球岩石模拟物(HLRS)的可行性,并使用不同功率的激光进行了实验。研究了焊接接头的微观结构、矿物成分、元素分布和剪切强度。一些低熔点矿物在焊接过程中熔化并气化,从而产生热分解气体。此外,焊接接头出现了大量微裂纹、气孔和气泡,导致焊接剪切强度降低。最后,还研究了激光功率对焊接剪切强度的影响,结果表明,激光功率为 1000 W 时,焊接剪切强度最高(15.69 N/cm)。
Laser welding study of vacuum sintered HUST-1 lunar regolith simulant
Efforts are underway to establish a permanent lunar base on the Moon. In situ lunar regolith is anticipated to be useful as a building material after sintering. However, sintering lunar regolith into a large-scale structure presents challenges. Therefore, the key to lunar construction lies in assembling multiple small-sized sintered modules into a stable, large-sized structure. This study explored the feasibility of welding the sintered HUST-1 lunar regolith simulant (HLRS) using a laser device and conducted experiments using lasers of varying power. The microstructure, mineral composition, element distribution, and shear strength of the welded joint were investigated. A few low-melting minerals were fused and vaporized during welding, leading to the generation of thermal decomposition gas. Furthermore, the welded joint exhibited numerous micro-cracks, pores, and bubbles, resulting in reduced weld shear strength. Finally, the influence of laser power on weld shear strength was investigated, revealing that the highest shear strength (15.69 N/cm) was achieved at a laser power of 1000 W. This study demonstrates the feasibility of laser welding of sintered HLRS for the first time, with potential applications in lunar base construction.
期刊介绍:
Science China Technological Sciences, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research.
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