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Stabilized Magnesium/Perfluoropolyether Nanocomposite Films by Helium Droplet Cluster Assembly
Author(s) -
Emery Samuel B.,
Rider Keith B.,
Lindsay C. Michael
Publication year - 2014
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201300158
Subject(s) - passivation , nanocomposite , materials science , magnesium , chemical engineering , layer (electronics) , helium , cluster (spacecraft) , desorption , deposition (geology) , thermal desorption , nanotechnology , metallurgy , organic chemistry , chemistry , adsorption , paleontology , sediment , computer science , engineering , biology , programming language
The production of stable, pre‐reactive, nanocomposite mixtures of magnesium and a perfluoropolyether (PFPE) has been achieved through the application of helium droplet cluster assembly. The nanocomposite films presented in this work demonstrated clear thermal desorption features that indicate the formation of an MgF 2 passivation layer between unreacted magnesium cores and PFPE shells upon heating. Additional heating resulted in the later rupture of the MgF 2 layer and release of trapped magnesium. The passivation behavior occurred only after deposition with the input of thermal energy, demonstrating the ability of helium droplets to assemble and deposit clusters in a pre‐reactive state.