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Journal of Nanomaterials
Volume 2012, Article ID 708240, 6 pages
http://dx.doi.org/10.1155/2012/708240
Research Article

Direct Preparation of Nano-Quasicrystals via a Water-Cooled Wedge-Shaped Copper Mould

School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China

Received 30 June 2011; Accepted 9 August 2011

Academic Editor: Bo Zou

Copyright © 2012 Zhifeng 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.

Abstract

We have successfully synthesized multicomponent Mg-based nano-quasicrystals (nano-QCs) through a simple route by using a water-cooled wedge-shaped copper mould. Nanoscale QCs are prepared directly on tip of wedge-shaped castings. The further study shows that nano-QCs in the Mg71Zn26Y2Cu1 alloy show well microhardness of greater than HV450. Electrochemical properties of three kinds of quasicrystal alloys are investigated in simulated seawater. The Mg71Zn26Y2Cu1 nano-QC alloy presents the best corrosion resistance in this study for the formation of well-distributed nano-QC phases (1~5 nm) and polygonal Mg2(Cu,Y) nanophases (40~50 nm).