Synthesis of BaHF Ceramics by Microwave Heating

Date

2016-11-25

Author

Emel, Erdal
Tulbez, Sımge
Dericioğlu, Arcan Fehmi

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Barium hexaferrite (BaFe12O19, BaHF) is an important magnetic material due to its effective electromagnetic wave absorbing characteristics. The most convenient way of producing BaHF ceramics is mixed oxide method in which BaHF powders are synthesized from Fe2O3 and BaCO3 starting materials by the action of heat. The calcination process is typically conducted by conventional heating under ambient atmosphere. However, microwave heating can be a good alternative for the calcination of BaHF ceramics as it provides more homogeneous and faster heating. In this study, the effect of microwave heating on the reaction kinetics and morphology of the BaHF was investigated. When the time and temperature of the calcination is fixed, it is expected that BaHF conversion would be higher as microwave heating is thought to trigger atomic processes different than those activated by conventional heating. In this study, the effect of calcination temperature and heating type on the reaction kinetics and morphology of the BaHF powders was investigated using SEM, XRD and VSM analyses in comparison to conventional heating. The results showed that when the temperature is kept constant, 100% BaHF transformation can be achieved in a shorter time period when microwave heating is applied instead of conventional heating.

URI

http://www1.metalurji.org.tr/immc2016/IMMC2016_Bildiriler.pdf
https://hdl.handle.net/11511/83206

Conference Name

18th International Metallurgy & Materials Congress (29 Eylül - 01 Ekim 2016)

Collections

Department of Metallurgical and Materials Engineering, Conference / Seminar

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Citation Formats

E. Emel, S. Tulbez, and A. F. Dericioğlu, “Synthesis of BaHF Ceramics by Microwave Heating,” 2016, p. 166, Accessed: 00, 2021. [Online]. Available: http://www1.metalurji.org.tr/immc2016/IMMC2016_Bildiriler.pdf.