摘要
为提高模拟月尘仿真度,对BHLD20进行了改进研究:通过引入斜长石作为原料之一制备模拟月尘,进一步逼近月尘真实组成;通过使用马弗炉制备胶结质及其它玻璃相,提高成熟度;通过湿法砂磨一步制备超细模拟月尘,使其与月尘粒度吻合;通过使用分散剂消除模拟月尘微粒团聚,还原真实粒度。以此研制出的模拟月尘BHLD20具有较高仿真度,其中值粒径285 nm,落于阿波罗月尘样品粒度区间内,微粒形貌多样且包含胶结质玻璃相,主要化学成分与大部分阿波罗月尘样品接近。
To improve the fidelity of lunar dust simulant, four efforts have beenmade：1） To bettermatch the mineralogy of lunar dust, plagioclase was used as a major material in preparing the lunardust simulant;2）To promote the maturity, a muffle furnace was used to expediently enrich the glassphase in feedstock, and for the production of some agglutinates; 3） To reach the fineness of lunardust, a one-step wet sand-milling technique was employed for ultrafine pulverization; and 4） A par-ticle dispersant was utilized to prevent the agglomeration in lunar dust simulant and retain the realparticle size. Through those improvements, the lunar dust simulant BHLD20 reached a high fidelitywith the median particle diameter of about 285 nm which was within the size range of Apollo lunardust samples. Some of the particles were irregular in shape, especially the agglutinate ones. Thebulk chemistry of BHLD20 was also close to most Apollo lunar dust samples.
作者
孙浩
高海洋
沈志刚
张晓静
杨艳静
SUN Hao;GAO Haiyang;SHEN Zhigang;ZHANG Xiaojing;YANG Yanjing(Beijing Institute of Spacecraft Environment Engineering,Beijing 100094,China;Beijing Key Lab.for Powder Technology Research and Development,School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China)
出处
《载人航天》
CSCD
北大核心
2018年第5期643-648,共6页
Manned Spaceflight
基金
载人航天预先研究项目(060402)
