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Metals 2012, 2(4), 441-449; doi:10.3390/met2040441
Article

Nanometer-Scale Heterogeneities of the Structure of Zirconium-Based Bulk Metallic Glasses

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National Science Center “Kharkov Institute of Physics & Technology”, Akademicheskaya 1, 61108 Kharkov, Ukraine
* Author to whom correspondence should be addressed.
Received: 10 October 2012 / Revised: 26 October 2012 / Accepted: 29 October 2012 / Published: 15 November 2012
(This article belongs to the Special Issue Amorphous Alloys)
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Abstract

Structure of amorphous alloys ZrTiCuNiBe and ZrTiCuNiAl is studied by means of low-field ion and combined field-emission microscopy. In both alloys the structural heterogeneities of nanometer-scale are clearly revealed. The surface layers formed by field evaporation possess a cellular structure. The cells have polygonal shape with transverse size ranging from 2 nm to 20 nm. It is established that variance of the local energy of field evaporation is of 0%–5% in the cell body. A local minimum of the field evaporation energy is observed within the cell boundaries (intercluster boundaries). In the minimum the depth is measured to be of 0.8 eV.
Keywords: bulk metallic glasses; field ion microscopy; nanostructure; field emission; clusters bulk metallic glasses; field ion microscopy; nanostructure; field emission; clusters
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.

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Bakai, A.S.; Sadanov, E.V.; Ksenofontov, V.A.; Bakai, S.A.; Gordienko, J.A.; Mikhailovskij, I.M. Nanometer-Scale Heterogeneities of the Structure of Zirconium-Based Bulk Metallic Glasses. Metals 2012, 2, 441-449.

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