Determining the Parameters of the Fulcher--Vogel Equation From Equilibrium Viscosity Data

Determining the Parameters of the Fulcher--Vogel Equation From Equilibrium Viscosity Data

Equilibrium viscosities of amorphous Pd sub 40 Ni sub 40 P sub 20 and amorphous Pd sub 40 Ni sub 40 P sub 19 Si sub 1 were related to temperature by the Fulcher--Vogel equation. The accuracy of the parameters in this equation was determined by several methods. It was found that the parameter B lies...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1990-08, Vol.A133, p.649-652
Hauptverfasser: Duine, P A, Sietsma, J, van den Beukel, A
Format: Artikel
Sprache:eng
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Zusammenfassung:Equilibrium viscosities of amorphous Pd sub 40 Ni sub 40 P sub 20 and amorphous Pd sub 40 Ni sub 40 P sub 19 Si sub 1 were related to temperature by the Fulcher--Vogel equation. The accuracy of the parameters in this equation was determined by several methods. It was found that the parameter B lies between 2500-9000K for PdNiP and between 1900-22 000K for PdNiPSi. This wide range of possible parameter values gives an explanation for the large differences reported in the literature for similar and even for identical glasses. Graphs. 8 ref.--AA
ISSN:0921-5093