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Thermogravimetric studies on the BHF synthesis of BaCO3 and α-Fe2O3 mixtures processed by mechanical alloying

I. ŞTEFAN1,* , C. NICOLICESCU1, A. OLEI1

Affiliation

  1. University of Craiova, Faculty of Mechanics, Department of IMST, 1st Calugareni street, Dr.Tr. Severin, Romania

Abstract

The paper presents the results of experimental research regarding barium hexaferrite synthesis from BaCO3+6α-Fe2O3 powders processed by mechanical alloying for 5 and 20 hours. The influence of the mechanical alloying time on synthesis temperature of barium hexaferrite (BHF) was determined by thermogravimetric analysis. Research has revealed that using stoichiometric mixtures prepared by mechanical alloying leads to a significant reduction of BHF synthesis temperature. The obtained results shows a reduction of BHF synthesis temperature by 4 % in case of mechanically alloyed mixture for 5 hours and by 12 % in case of mechanically alloyed mixture for 20 hours..

Keywords

Hexaferrite, Mixture, Mechanical alloying, Hematite.

Submitted at: March 25, 2013
Accepted at: July 11, 2013

Citation

I. ŞTEFAN, C. NICOLICESCU, A. OLEI, Thermogravimetric studies on the BHF synthesis of BaCO3 and α-Fe2O3 mixtures processed by mechanical alloying, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 7-8, pp. 774-780 (2013)