Journal
JOURNAL OF MATERIALS RESEARCH
Volume 23, Issue 10, Pages 2816-2820Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/JMR.2008.0347
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Funding
- Alexander von Humboldt-Foundation (AvH Foundation, Germany)
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The thermodynamic and kinetic fragilities of two near-eutectic Mg-based bulk metallic, glass (BMG)-forming liquids, Mg61Cu28Gd11 and Mg59.5Cu22.9Ag6.6Gd11, were investigated using high-precision differential scanning calorimeter (DSC). The thermodynamic fragility denoted as F-3/4, was determined by evaluating the temperature dependence of the excess entropy S-ex. The heating rate dependence of the relaxation time at the Glass transition temperature was investigated to measure the kinetic fragility. A positive correlation between the thermodynamic and kinetic fragilities could be established in Mg-based BMG-forming liquids on the basis of Adam-Gibbs equation in contrast to a number of other BMGs.
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