DSC Thermal Analysis for Some Calcium Iron Arsi- Vanadate Oxide Glasses

Mostafa Ag, Hassan My and Goumaa Hm
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Hassan My: Physics Department, Faculty of Science, AL-Zahra University, Nasr City, Cairo, EGYPT
Goumaa Hm: Optical Branch, High Institute of Optics Technology, Cairo, Egypt

Organic & Medicinal Chemistry International Journal, 2018, vol. 6, issue 4, 88-91

Abstract: Glasses with molar composition of (55 - x) molpercentage As2O3 - (25 + x) molpercentage V2O5 - 10 molpercentage Fe2O3 - 10 molpercentage CaO, where x = 0, 5, 10, 15, 20, 25 and 30, have been prepared using the normal melt quench method. The effect of replacement As2O3 by V2O5 on the structure of these glasses have been investigated by Differential scanning calorimetric DSC thermal analysis, Density d measurement and Molar volume Vm calculation. For each sample, DSC showed the presence of a single glass transition temperature Tg in addition to two crystallization peak s. The activation energy for glass transition indicates that the prepared glasses may be of high stability. Both the density and the molar volume changed oppositely with change in composition, indicating significant change of the structural units.

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Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:adp:jomcij:v:6:y:2018:i:4:p:88-91

DOI: 10.19080/OMCIJ.2018.06.555693

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