Synthesis of Fe-ZrO2 Composite Powders by Thermochemical Method

Elizaveta Bobrynina; Ahmad Alali Alkhalaf; Aleksey I. Shamshurin; Oleg Tolochko; Veselin Mikhailov

doi:10.4028/www.scientific.net/KEM.721.285

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 721Synthesis of Fe-ZrO2 Composite Powders by...

Synthesis of Fe-ZrO₂ Composite Powders by Thermochemical Method

Abstract:

Nanostructured Fe–ZrO₂ composite powders with homogeneous distribution of zirconia were synthesized by thermochemical process. The synthesis procedures are (1) preparation of precursor powder by spray-drying of solution made from water-soluble iron and zirconium nitrates, (2) air heat treatments to evaporate volatile components in the precursor powder and synthesis of nanostructured Fe₂O₃+ZrO₂, and (3) Fe₂O₃ reduction by hydrogen into pure Fe. In order to find phase containing Zr the powder was treated with 15% hydrochloric acid to dissolve iron particles. The size of the particles is less than 50 nm. Fe–ZrO₂ composite powders can be used as filler for cored welding wire. Shown that particles zirconium oxide well affect the final structure of the weld.

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Periodical:

Key Engineering Materials (Volume 721)

Pages:

285-289

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.721.285

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Online since:

December 2016

Authors:

Elizaveta Bobrynina*, Ahmad Alali Alkhalaf, Aleksey I. Shamshurin, Oleg Tolochko, Veselin Mikhailov

Keywords:

Filled Cored Welding Wire, Iron, Oxide Dispersion, Thermochemical Synthesis, Trengthened Materials, Zirconium Oxide

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