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Equilibrium Thermodynamics Near the Glass Transition - The Conceptual Application of the Limiting Fictive Temperature

Published online by Cambridge University Press:  10 February 2011

G. Wilde
Affiliation:
University of Wisconsin - Madison, Department of Material Science and Engineering, Madison, 53706, WI, USA
J. H. Perepezko
Affiliation:
University of Wisconsin - Madison, Department of Material Science and Engineering, Madison, 53706, WI, USA
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Abstract

The enthalpy, entropy, specific heat, specific volume and the equilibrium shear viscosity of the deeply undercooled melt of the bulk glass forming alloy Pd40Ni40P20 have been determined as functions of temperature. The concept of limiting fictive temperature was applied to the entire set of measurements in order to allow for a valid comparison of the data based upon the respective equilibrium values. The comparison of the equilibrium properties shows that a proposed hierarchy of stability limits does not apply for this alloy. The results also indicate that the glass temperature as defined by the limiting fictive temperature does not depend on the property under observation.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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