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Open Access item Ceramic/metal nanocomposites by lyophilization: Processing and HRTEM study

Authors:Gutiérrez-González, C. F.
Agouram, S.
Torrecillas, Ramón
Moya, J. S.
López-Esteban, Sonia
Keywords:Composites, Nanostructures, Freeze-drying, Electron microscopy
Issue Date:Feb-2012
Citation:Materials Research Bulletin 47(2): 285-289 (2012)
Abstract:This work describes a wet-processing route based on spray-freezing and subsequent lyophilization designed to obtain nanostructured ceramic/metal powders. Starting from the ceramic powder and the corresponding metal salt, a water-based suspension is sprayed on liquid nitrogen. The frozen powders are subsequently freeze-dried, calcined and reduced. The material was analyzed using X-ray diffraction analysis at all stages. High resolution transmission electron microscopy studies showed a uniform distribution of metal nanoparticles on the ceramic grain surfaces, good interfaces and high crystallinity, with an average metal particle size in the nanometric range.
Description:5 páginas, 8 figuras, 1 tabla.-- El pdf del artículo es el manuscrito de autor.
Publisher version (URL):http://dx.doi.org/10.1016/j.materresbull.2011.11.027
Appears in Collections:(ICMM) Artículos
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