Researches Regarding Elaboration of Barium Hexaferrite from Microwave Heating

Abstract:

The paper presents the results of experimental researches on the formation of barium hexaferrite type M (BHFM) by microwave heating. The microwave heating process takes only a few minutes to obtain calcined barium ferrite powders. Micronic and nanometric powders of BaCO3 and α-Fe2O3 were used as raw materials. In order to obtain BHFM, the microwave heating process was used with following mixtures: stoichiometric homogeneous mixture of BaCO3 and α-Fe2O3 powders, mechanically alloyed mixtures of BaCO3 and α-Fe2O3 powders for 5 and 20 hours in wet medium using a high energy ball mill Pulverisette 4. Using high energy ball milling, the powder size was turned into nanoscale. After using the microwave heating process it was observed a significant reduction of temperature-time parameters to BHFM formation for mechanically alloyed mixtures compared to homogeneous mixture.

• Periodical: Solid State Phenomena (Volume 188)
• Pages: 369-375
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.188.369
• Online since: May 2012
• Authors: Iulian Ştefan, Sorin Vasile Savu, Olimpia Ghermec, Claudiu Nicolicescu, Mario Trotea
• Keywords: Barium Hexaferrite, Mechanical Alloying, Microwave Heating Process

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