Izvorni znanstveni članak

Zinc ferrite nanoparticles as perspective functional materials for applications in casting technologies

A. Kmita ; AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Krakow, Poland
J. Żukrowski ; AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Krakow, Poland
K. Hodor ; Netzsch Instrumenty sp. z o.o., Poland
H. Smogór ; Netzsch Instrumenty sp. z o.o., Poland
M. Sikora ; AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Krakow, Poland

Sažetak

In this article it discuss on possible application of magnetic oxide nanoparticles, namely non-stoichiometric zinc ferrite nanoparticles as a functionalizing agent in foundry processes. Thermal analysis showed a weight loss of the sample at 1 273 K in an amount of 7,7 %, which is a result of the following processes taking place in different temperature ranges. Upon its thermal treatment Zn_0,4Fe_2,6O₄ decomposes to zinc oxide and iron (III) oxide (first stage) and next to iron (II,III) oxide and oxygen (second stage). The degree of decomposition was expressed as Fe2+ / Fe_total. Mössbauer spectroscopy showed that the over 30 % of Fe3+ present in starting material was reduced to Fe2+.

Ključne riječi

casting, zinc ferrite nanoparticles; Mössbauer Spectroscopy; magnetic nanoparticles; thermal decomposition

Hrčak ID:

168846

URI

https://hrcak.srce.hr/168846

Datum izdavanja:

2.1.2017.

Posjeta: 2.365 *