Characterization of Cu-Al2O3 nano-scale composites synthesized by in situ reduction

Motta, M. S. ; Jena, P. K. ; Brocchi, E. A. ; Solorzano, I. G. (2001) Characterization of Cu-Al2O3 nano-scale composites synthesized by in situ reduction Materials Science and Engineering: C - Biomimetic and Supramolecular Systems, 15 (1-2). pp. 175-177. ISSN 0928-4931

Full text not available from this repository.

Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09284...

Related URL: http://dx.doi.org/10.1016/S0928-4931(01)00272-7

Abstract

The copper-alumina system is reported to have an excellent combination of properties that are essentially dependent on their microstructure, which in turn, will vary according to the preparation method. In this work, the synthesis of the Cu-Al2O3 (5 wt.%) nano-scale composites were carried out by in situ reduction of a powder mixture consisting of CuO and Al2O3, previously obtained through a chemical route. The procedure imparts special features to the product in terms of microstructure. TEM bright field and centered dark field imaging have shown well-developed copper crystals surrounded by a fine dispersion of Al2O3nano-scale particles, which are in the order of 10 nm. Copper crystals in the order of 50 nm are dispersed and exhibit twinning despite their small size. Current investigation is being developed towards the determination of particle size distribution through HRTEM.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Cu-Al2O3 Nano-composites; In situ; Reduction; TEM
ID Code:13706
Deposited On:12 Nov 2010 15:05
Last Modified:03 Jun 2011 06:14

Repository Staff Only: item control page