月壤及模拟月壤微观结构的研究

Microstructure of lunar soil and lunar soil simulant

为了对比研究月壤与模拟月壤的微观结构,介绍了月壤的形成作用过程和5种基本颗粒类型;通过真实月壤照片,对月壤微观结构进行了分析;利用火山灰为模拟月壤主体材料,对其成分进行了检测;对模拟月壤的火山灰颗粒进行了显微图像分析试验。结果表明,月壤存在胶结物微观颗粒,胶结物颗粒具有分支的组织形态和封闭的气泡,并且有金属铁珠存在;火山灰所含的主要成分及含量与月壤相似,经过粉碎的火山灰试样棱角较为明显,其纵横比峰值略小,稍显长条状,但与月壤比较相近,而复杂度因子则略有欠缺,说明颗粒还不够粗糙和多棱。

In order to compare microstructure of lunar soil and lunar soil stimulant, formative processes and five grain type of lunar soil are introduced. We analyze microstructure of lunar soil through lunar soil photos. There is a composition test on pozzolan that is taken as main materials of lunar soil simulant. Microscopic image analysis tests on pozzolan have been done. Test and analysis results show that there are agglutinates in lunar soil. Agglutinate grains take on branching form of organization and closed cell and have metallic iron globules. Main component content of pozzolan is similar to that of lunar soil. Pozzolan crushed show obvious angular, slightly rod-like and little peak value of aspect ratio, which are similar to lunar soil. But complexity factors have little deficiency, which account for pozzolan as simulant materials have not enough coarse and angular.