Depositing of Amorphous Ferri-Oxide Nanoparticles on Surfaces of Submicron Aluminum Powder

Yi Wang; Wei Jiang; Xiao Lan Song; Guo Dong Deng; Feng Sheng Li

doi:10.4028/www.scientific.net/AMM.320.451

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 320Depositing of Amorphous Ferri-Oxide Nanoparticles...

Depositing of Amorphous Ferri-Oxide Nanoparticles on Surfaces of Submicron Aluminum Powder

Abstract:

Nanoparticles with about 20nm diameter were densely coated on the surface of submicron Al via a sol-gel processing in ethanol, wherein 1,2-epoxypropane acted as a weak base to consume proton in solution. After the medium gelled, uniform network formed and aluminum particles imbedded in it. The core-shell structure and the nanoparticles were observed in SEM analysis. The EDS spectrum and the XRD pattern revealed that the cores consisted of amorphous ferri-oxide of which the mass ratio is closed to that of crystal Fe₂O₃. Thermal analysis was performed and the results indicated that the DSC peak point of ferri-oxide/Al nanocomposite showed 53 °C lower than that of [ferri-oxide+A simple mixture.

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Periodical:

Applied Mechanics and Materials (Volume 320)

Pages:

451-455

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.320.451

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Online since:

May 2013

Authors:

Yi Wang, Wei Jiang, Xiao Lan Song, Guo Dong Deng, Feng Sheng Li

Keywords:

Aluminum Powder, Ferric Oxide, Nanocomposite, Sol-Gel, Thermite Reaction

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