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Faculty of Science and Arts - Khulais
Document Details
Document Type
:
Article In Journal
Document Title
:
Effect of MoO3 additions on the thermal stability and crystallization kinetics of PbO–Sb2O3–As2O3 glasses
تأتير إضافة أكسيد المولبيدنيوم على الاستقرار الحرارى والتبللر لزجاج من أكسيد الزرنيخ والأنتيمون والرصاص
Subject
:
thermal analysis for oxides
Document Language
:
Arabic
Abstract
:
The present paper reports on the effect of MoO3 on the glass transition, thermal stability and crystallization kinetics for (40PbO–20Sb2O3–40As2O3)100-x–(MoO3)x (x = 0, 0.25, 0.5, 0.75 and 1 mol%) glasses. Differential scanning calorimetry (DSC) results under non-isothermal conditions for the studied glasses were reported and discussed. The values of the glass transition temperature (Tg) and the peak temperature of crystallization (Tp) are found to be dependent on heating rate and MoO3 content. From the compositional dependence and the heating rate dependence of Tg and Tp, the values of the activation energy for glass transition (Eg) and the activation energy for crystallization (Ec) were evaluated and discussed. Thermal stability for (40PbO–20Sb2O3–40As2O3)100-x–(MoO3)x glasses has been evaluated using various thermal stability criteria such as DT, Hr, Hg and S. Moreover, in the present work, the Kr(T) criterion has been considered for the evaluation of glass stability from DSC data. The stability criteria increases with increasing MoO3 content up to x = 0.5 mol%, and decreases beyond this limit. Keywords Crystallization kinetics Oxide
ISSN
:
0018-3
Journal Name
:
Journal of thermal analysis
Volume
:
100
Issue Number
:
100
Publishing Year
:
1431 AH
2010 AD
Article Type
:
Article
Added Date
:
Tuesday, December 28, 2010
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
كمال عبدالنبي علي
ali, kmal Abdualnabi
Researcher
Doctorate
Files
File Name
Type
Description
28327.pdf
pdf
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