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 TypeDr GradeEmail
كمال عبدالنبي عليali, kmal AbdualnabiResearcherDoctorate 

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