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نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
GAMMA-RADIATION EFFECTS ON THE REDUCTION OF HEMATITE TO IRON IN THE GRAPHITE-IRON(III) OXIDE SYSTEM
GAMMA-RADIATION EFFECTS ON THE REDUCTION OF HEMATITE TO IRON IN THE GRAPHITE-IRON(III) OXIDE SYSTEM
 
لغة الوثيقة : العربية 
المستخلص : The effects of Co-60-gamma radiation and of various sample composition on the reduction of hematite to iron in the graphite-iron(III) oxide system in air were studied using isothermal and dynamic TG techniques. Kinetic analysis of isothermal data were performed according to various theoretical models of heterogeneous reactions and the results showed that the three-dimensional phase boundary model gives the best fit of data. Analysis of dynamic TG data were made using Ozawa integral method, Coats-Redfern method and a composite method based on the modified Coats and redfern equation. The activation parameters were calculated and the results of the different methods were compared and discussed. Radiation apparently did not introduce a change in the reaction model or mechanism. However, there is a decrease in activation energy and frequency factor upon irradiation and a decrease in the half-life time of the reaction which is remarkable at the higher temperatures and higher doses.  
اسم الدورية : JOURNAL OF THERMAL ANALYSIS 
المجلد : 39 
العدد : 1 
سنة النشر : 1993 هـ  
تاريخ الاضافة على الموقع : Saturday, June 14, 2008 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
سليمان ناصر باسهلBASAHEL SNباحث  
.ELBELLIHI AAباحث  
.DIEFALLAH EMباحث  

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