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RF thermal plasma synthesis of ferrite nanopowders from metallurgical wastes

Szépvölgyi, János and Mohai, Ilona and Gubicza, Jenő and Sáray, I. (2004) RF thermal plasma synthesis of ferrite nanopowders from metallurgical wastes. In: 8th Conference and Exhibition of the European Ceramic Society, 2003. június 29. - július 3., Istanbul, Turkey.

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Abstract

RF thermal plasma synthesis of zinc-ferrite nanopowders has been studied from metallurgical wastes of high iron oxide and zinc oxide and/or hydroxide content. XRD measurements of the products revealed that an extensive spinel formation took place on R-F plasma treatment. However, instead of expectable ZnFe(2)O(4), formation of zinc ferrous ferrites (Zn(0,7)Fe(2,3)O(4) and Zn(0,4)Fe(2,6)O(4)) was concluded from the XRD investigations. Addition of some nickel salt to the waste mixture resulted in the formation of Ni-Zn ferrites of different composition. Measurements of magnetic properties revealed that the saturation magnetization of ferrite powders produced by thermal plasma treatment was much higher than that of ferrites synthesized by the conventional ceramic route.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science / természettudomány > QC Physics / fizika
Q Science / természettudomány > QD Chemistry / kémia
Depositing User: Erika Bilicsi
Date Deposited: 12 Oct 2012 09:46
Last Modified: 12 Oct 2012 12:55
URI: http://real.mtak.hu/id/eprint/3109

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