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<strong>Glass forming ability of ZBLAN glass</strong>

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Title Statement <strong>Glass forming ability of ZBLAN glass</strong>
 
Added Entry - Uncontrolled Name Pandya, Prapti B.; Applied Physics Department Faculty of Technology and Engineering The M. S. University of Baroda Vadodara 390001 India
Pratap, Arun ; Applied Physics Department Faculty of Technology and Engineering The M. S. University of Baroda Vadodara 390001 India
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Uncontrolled Index Term statistical physics and thermodynamics
ZBLAN glass; Glass forming ability; Gibbs free energy difference (ΔG)
 
Summary, etc. A ZBLAN glass of the following composition: 53 mol.% ZrF4, 20 mol.% BaF2, 4 mol.% LaF3,3 mol.% AIF3, 20 mol.% NaF is studied for predicting its glass forming ability (GFA). The GFA of a ZBLAN glass is evaluated by estimating the Gibbs free energy difference (ΔG) between the undercooled liquid and the corresponding equilibrium solid phases. Other GFA criteria (T<sub>rg</sub>=T<sub>g</sub>/T<sub>l</sub>, T<sub>x</sub>/T<sub>l</sub>, γ=T<sub>x</sub>/T<sub>g</sub>+T<sub>l</sub>, ΔT<sub>xg</sub>=T<sub>x</sub>-T<sub>g</sub>, T<sub>g</sub>/T<sub>m</sub>) are also calculated. Here, the approximation for ΔG considering constant specific heat difference (ΔC<sub>P</sub>) over a wide temperature range is calculated for a ZBLAN glass. The so-calculated ΔG is compared with the result of other heoretical approaches and experimental data. We can see from the result that the expression with the consideration of constant ΔC<sub>P </sub>works well in the entire undercooling for ZBLAN glass forming system. So we can say that the specific heat difference is being constant in the entire undercooling for ZBLAN glass.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2020-08-21 15:17:31
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/23425
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 58, ##issue.no## 6 (2020): Indian Journal of Pure & Applied Physics
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJPAP/article/download/23425/465473285
http://op.niscair.res.in/index.php/IJPAP/article/download/23425/465473286
 
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