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MEKANĠK AKTĠVE EDĠLMĠġ KROMĠTĠN GRAFĠTLE KARBOTERMAL REDÜKSĠYON KĠNETĠĞĠ

CARBOTHERMAL REDUCTION KINETICS OF MECHANICALLY ACTIVATED CHROMITE WITH GRAPHITE

Journal Name:

  • Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi

Publication Year:

  • 2011

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The carbothermal reduction kinetics of mechanically activated chromite with graphite under an argon atmosphere was investigated at temperatures between 1100 and 1400°C. Zhuravlev-Lesokhin-Tempelman (ZLT) method was used in the reduction kinetics for non-activated chromite and the activation energy was calculated as 401,7 kJ/mol. Solid-state diffusion method was used in the reduction kinetics for 60 min-activated chromite and the activation energy was calculated as 283,3 kJ/mol. This decrease in activation energy was due to structural disordering in chromite structure by mechanical activation.
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Abstract (Original Language): 
Mekanik aktive edilmiĢ kromitin argon atmosferi altında grafitle karbotermal redüksiyon kinetiği 1100 – 1400°C sıcaklık aralığında incelenmiĢtir. Aktive edilmemiĢ kromitin redüksiyon kinetiğinde Zhuravlev-Lesokhin-Tempelman (ZLT) metodu kullanılmıĢ ve aktivasyon enerjisi 401,7 kJ/mol olarak hesaplanmıĢtır. 60 dakika aktive edilmiĢ kromitin redüksiyon kinetiğinde katı hal difüzyon metodu kullanılmıĢ ve aktivasyon enerjisi 283,3 kJ/mol olarak hesaplanmıĢtır. Aktivasyon enerjisindeki bu düĢüĢ, mekanik aktivasyonla kromit yapısındaki yapısal düzensizliklerle sağlanmıĢtır.
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  • 1
17 - 22
  • Turkish

REFERENCES

References: 

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