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

Autor: Xiaolan Song, Yi Wang, Guo Dong Deng, Wei Jiang, Feng Sheng Li
Rok vydání: 2013
Předmět:
Zdroj: Applied Mechanics and Materials. 320:451-455
ISSN: 1662-7482
DOI: 10.4028/www.scientific.net/amm.320.451
Popis: 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.
Databáze: OpenAIRE
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