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bulk metallic glasses; field ion microscopy; nanostructure; field emission; clusters
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2012-11-16T08:30:16+08:00
2012-11-16T08:29:07+08:00
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Nanometer-Scale Heterogeneities of the Structure of Zirconium-Based Bulk Metallic Glasses
Alexander S. Bakai
Evgenij V. Sadanov
Vjacheslav A. Ksenofontov
Sergej A. Bakai
Julia A. Gordienko and Igor M. Mikhailovskij *
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.
bulk metallic glasses
field ion microscopy
nanostructure
field emission
clusters
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