Thermodynamic properties of liquid glass-forming Ca–Mg alloys

The complex formation model was used to investigate the thermodynamic properties of liquid Ca–Mg glassy alloys. Our expressions reproduce the thermodynamic functions such as free energy of mixing, enthalpy of mixing, entropy of mixing and activity ratio. The study of long wavelength concentration–co...

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Bibliographic Details
Published in:Journal of alloys and compounds 2002-06, Vol.340 (1), p.108-113
Main Authors: Mishra, P.P., Milanarun, M., Jha, N., Mishra, A.K.
Format: Article
Language:English
Subjects:
Applied sciences
Composition fluctuations
Condensed matter: structure, mechanical and thermal properties
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Glass transitions
Liquid alloys
Metals. Metallurgy
Physics
Specific phase transitions
Thermodynamic properties
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Summary:The complex formation model was used to investigate the thermodynamic properties of liquid Ca–Mg glassy alloys. Our expressions reproduce the thermodynamic functions such as free energy of mixing, enthalpy of mixing, entropy of mixing and activity ratio. The study of long wavelength concentration–concentration fluctuations ( S CC(0)) provides structural information about liquid glass-forming Ca–Mg alloys. Chemical short range order parameter ( α 1) was obtained from S CC(0) to quantify the degree of order. The study reveals that the formation of more than one type of complex may be related to the process of glass formation.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(01)01988-0