Preparation of Iron Nanoparticles by Selective Leaching Method

• Authors: A. Michalcová , D. Vojtěch , T. Kubatík , K. Stehlíková , F. Brabec , I. Marek
• Languages of publication: EN

Abstracts

EN

Iron nanoparticles were prepared by selective leaching method. Initially the rapidly solidified AlFe11 alloy was prepared and consequently the aluminium matrix was dissolved from this alloy in 20% NaOH solution. This process was carried out at 0 and 80°C. At lower temperature, the iron nanoparticles covered by thin layer of Fe(OH)₃ were successfully obtained. The size of formed nanoparticles was about 8 nm and the particles exhibited massive agglomeration. It is not limitation of the process, because the application of nanoparticles is as a precursor for production of bulk nanocrystalline materials (metals, alloys and metal matrix composites). At higher temperature, the selective leaching process failed and iron was oxidized to different hydroxides. Aluminium containing waste liquid from selective leaching was used for production of powder Al₂O₃. Initial alloys and products were characterized by X-ray diffraction, scanning electron microscopy, and high resolution transmission electron microscopy.

Keywords

EN

61.05.J-; 61.05.cp; 75.50.Bb; 81.40.-z; 81.07.Bc

Discipline

• 61.05.cp: X-ray diffraction
• 81.07.Bc: Nanocrystalline materials
• 81.40.-z: Treatment of materials and its effects on microstructure, nanostructure, and properties
• 61.05.J-: Electron diffraction and scattering(for electron diffractometers, see 07.78.+s)
• 75.50.Bb: Fe and its alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 640-642

Dates

published

2015-10

Contributors

author

A. Michalcová

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology, Prague, Technicka 5, Prague 6, 166 28, Czech Republic

author

D. Vojtěch

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology, Prague, Technicka 5, Prague 6, 166 28, Czech Republic

author

T. Kubatík

• Institute of Plasma Physics AS CR, v.v.i., Za Slovankou 1782/3v, Prague 8, 182 00, Czech Republic

author

K. Stehlíková

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology, Prague, Technicka 5, Prague 6, 166 28, Czech Republic

author

F. Brabec

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology, Prague, Technicka 5, Prague 6, 166 28, Czech Republic

author

I. Marek

• Department of Metals and Corrosion Engineering, Institute of Chemical Technology, Prague, Technicka 5, Prague 6, 166 28, Czech Republic

References

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Identifiers

DOI

10.12693/APhysPolA.128.640