| 摘要: |
| 微波熔融月壤成形是未来月面建造的重要技术途径。本文基于模拟月壤，通过电磁波边界约束实现聚能加热，分析了模拟月壤熔融成形过程中的表面温度场与熔体的演化规律，成形样品的宏观形貌、质量、密度及其微观结构特征。试验结果表明，通过本文提出的微波聚能方法可以快速实现模拟月壤的熔融成形。随作用时间增加，模拟月壤表面温度响应区域与温度最高值增大。熔体首先在月壤内部产生，并随时间增加逐渐在月壤表面显现。随着作用时间增加，模拟月壤熔融成形样品宏观形貌逐渐变为中间扁平的椭圆饼形。不同作用时间成形样品内部均存在大量孔隙，导致其密度呈现出复杂的演化规律。 |
| 关键词: 原位资源利用 模拟月壤 微波熔融 微观结构 |
| 基金项目:民用航天技术预先研究项目（D0***02）。 |
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| Experimental Study on the Microwave-focused Melting Lunar Soil Simulant |
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Lu Jiaqi1, Li Zhengwei*1, He Chengdan2, Zuo Yang3
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1. State Key Laboratory of Intelligent Deep Metal Mining and Equipment, Northeastern University, Shenyang 110819;2. National Key Laboratory on Vacuum Technology and Physics, Lanzhou Institute of Physics, Lanzhou 730000;3. Beijing Spacecraft Manufacturing Co., Ltd., Beijing 100094
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| Abstract: |
| Microwave melting lunar soil has emerged as important technical approach for future lunar surface construction. Based on the lunar soil simulant, this paper realizes the energy-focusing heating through the boundary constraints of electromagnetic waves, and analyzes the surface temperature field during the melting process of the lunar soil simulant, as well as the evolution laws of the melt. It also examines the macroscopic morphology, mass, density, and microscopic structural characteristics of the formed samples. The experimental results show that the melting and forming of the lunar soil simulant can be rapidly achieved through the microwave energy-focusing method proposed in this paper. As the working time increases, the surface temperature response area and the maximum surface temperature value of the lunar soil simulant increase. The melt is first generated inside the lunar soil simulant and gradually appears on the surface of the lunar soil simulant as working time increases. As the working time increases, the macroscopic morphology of the melted sample of the lunar soil simulant transforms to an elliptical cake shape with a flattened middle. A large number of pores exist within the melted samples under different working times, which leads to a relatively complex evolution law of their density. |
| Key words: in-situ resource utilization lunar soil simulant microwave melting microstructure |
