Investigation of Partially Crystalline Zr77Ni23 Metallic Glass
Journal Title: TEM JOURNAL - Year 2016, Vol 5, Issue 3
Abstract
This paper presents the results of an extensive research of partially crystalline Zr77Ni23 metallic glass (indicated numbers refer to atomic percentages). The partially crystalline Zr77Ni23 samples were prepared by melt-spinning using a device constructed in the Metal Physics Laboratory, Faculty of Science in Sarajevo. XRD pattern shows crystalline peaks which correspond to an orthorhombic structure of Zr3Ni superimposed on an amorphous pattern. Homogeneity and chemical composition were investigated using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Crystallization was studied by differential scanning calorimetry (DSC). DSC analysis indicated a simple thermally activated process. Overall activation energy of the crystallization was calculated using Kissinger's model for nonisothermal process and compared with those given by the Augis-Bennett model. By monitoring of the electrical resistance in the temperature range 80 – 270 K a small and negative thermal coefficient of electrical resistance was observed. This means that electrical resistance varies slightly with temperature and it makes this metallic glass suitable for application in electronic circuits for which this property is an important requirement.
Authors and Affiliations
Amra Salčinović Fetić, Izet Gazdić, Gordana Ostojić, Suada Sulejmanović
Keywords
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- EP ID EP118061
- DOI 10.18421/TEM53-08
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