Formation of NiZr<SUB>2</SUB> Binary Metallic Glass: Experimental and Molecular Dynamics Analyses

Formation of NiZr₂ Binary Metallic Glass: Experimental and Molecular Dynamics Analyses

Key Laboratory of Liquid Structure and Heredity of Materials (Ministry of Education), Shandong University, Jinan 250061

Received Date: December 04, 2006

Published Date: July 31, 2007

Abstract

The local atomic structure of an amorphous NiZr₂ alloy is identified by using x-ray diffraction, transmission electron microscopy, and differential scanning calorimeter. Based on the experimental results, molecular dynamics simulation is performed to investigate the glass formation of liquid NiZr₂ alloy. Some
relevant features of the pair correlation functions are in good agreement with those obtained by experiment. The pair analysis parameters are calculated, suggesting that there exist icosahedral ordering, four-fold symmetrical bipyramid and triangular-faced polyhedral units in the amorphous NiZr₂ structure. The result is beneficial to open avenues toward the understanding of fundamental theoretical problems of glass formation of simple binary alloys.

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