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Journal of Nanomaterials
Volume 2015, Article ID 412071, 8 pages
Research Article

Preparation and Characterization of Highly Flexible Al2O3/Al/Al2O3 Hybrid Composite

1School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China
2Department of Mechanical, Automotive and Materials Engineering, University of Windsor, Windsor, ON, Canada N9B 3P4

Received 22 October 2015; Accepted 15 December 2015

Academic Editor: Zhengping Zhou

Copyright © 2015 Zhijiang Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The natural brittleness of oxide ceramics heavily inhibits their more extensive applications. In present research, a highly flexible Al2O3/Al/Al2O3 hybrid composite was fabricated by employing plasma electrolysis oxidation to in situ grow alumina layers on Al foil, in which an outside layer of nanostructured polycrystalline oxide ceramic was composed of nanosized grains with the size of around 17 nm. Due to shear band formation, nanosized circle bubbles prolonging the crack path, grain rotation, and deformation, the fabricated Al2O3/Al/Al2O3 hybrid composite contains no observable cracks even after being bent on a cylindrical bar with a curvature of 1.5 mm. The composite exhibits alumina stiffness at the elastic stage and aluminum ductility during plastic deformation, which provides high flexibility with the well-integrated properties of the components. In a synergistic interaction, the alumina on the outside exhibited a strain of 0.33% at room temperature, which was higher than optimum value of 0.25% presented by reported most flexible oxide ceramics. With the unique characteristics and properties, the Al2O3/Al/Al2O3 composite demonstrates a great potential for various engineering applications.