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Synthesis and Stability of Iron Nanoparticles for Lunar Environment StudiesSimulant of lunar dust is needed when researching the lunar environment. However, unlike the true lunar dust, today s simulants do not contain nanophase iron. Two different processes have been developed to fabricate nanophase iron to be used as part of the lunar dust simulant: (1) Sequentially treating a mixture of ferric chloride, fluorinated carbon, and soda lime glass beads at about 300 C in nitrogen, at room temperature in air, and then at 1050 C in nitrogen. The product includes glass beads that are grey in color, can be attracted by a magnet, and contain alpha-iron nanoparticles (which seem to slowly lose their lattice structure in ambient air during a period of 12 months). This product may have some similarity to the lunar glassy regolith that contains Fe(sup 0). (2) Heating a mixture of carbon black and a lunar simulant (a mixed metal oxide that includes iron oxide) at 1050 C in nitrogen. This process simulates lunar dust reaction to the carbon in a micrometeorite at the time of impact. The product contains a chemically modified simulant that can be attracted by a magnet and has a surface layer whose iron concentration increased during the reaction. The iron was found to be alpha-iron and Fe3O4 nanoparticles, which appear to grow after the fabrication process, but stabilizes after 6 months of ambient air storage.
Document ID
20090029913
Document Type
Technical Memorandum (TM)
Authors
Hung, Ching-cheh (NASA Glenn Research Center Cleveland, OH, United States)
McNatt, Jeremiah (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
July 1, 2009
Subject Category
Lunar and Planetary Science and Exploration
Report/Patent Number
E-17000
NASA/TM-2009-215659
Funding Number(s)
WBS: WBS 936374.03.01.03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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