Morphology investigation of alumina nano-powders prepared by a sol-gel combustion method

الموضوعات : Journal of Physical & Theoretical Chemistry

S. A. Khorrami ¹ , R. Lotfi ² , M. A. Baghchesara ³ , S. Moradi ⁴

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تاريخ الإرسال : 12 السبت , شعبان, 1436 تاريخ التأكيد : 12 السبت , شعبان, 1436 تاريخ الإصدار : 24 الإثنين , ذو القعدة, 1431

الکلمات المفتاحية: Alumina Nanopowder, Sol-gel Combustion Method, glycine, Fuel,

ملخص المقالة :

Highly sinterable alumina nano-powders have been synthesized by a sol-gel combustion method with glycine asfuel. The preparation involved the thermal decomposition of a chelating agent (fuel)-nitrate gel and theformation of amorphous precursors. The nanopowders calcined at 1100°C were characterized by X-ray powderdiffraction (XRD) and Scanning Electron Microscopy (SEM). It was found that the chelating agent and fuelused had a significant influence on the average grain size of a-A1203 nanopowder. The rate of combustionreaction between chelating agent (fuel) and nitrate was responsible for the growth of the grain.