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Synthesis of Fe-Ni nano-particles by low-temperature hydrogen reduction of mechanically alloyed Ni-ferrite

Azizi, A ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2009.05.147
  3. Publisher: 2009
  4. Abstract:
  5. Fe-Ni nano-particles were synthesized by mechanical alloying and subsequent low-temperature hydrogen reduction of oxide mixtures. First, single-phase nickel ferrite was mechanically synthesized for 30 h with steel balls to powder weight ratio of 20 while the milling was operated at 300 rpm. The as-milled powder was then placed in contact with hydrogen at 600 °C for 1 h. Reduction reactions resulted in production of Fe-Ni nano-particles. Phase identification, morphological and microstructural studies, chemical analysis and magnetic property determination were carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), transition electron microscopy (TEM), energy dispersive spectrometry (EDS) and vibration sample magnetometry (VSM) on the samples. Results are described in the paper. © 2009 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Fe-Ni nano-particle ; Low-temperature hydrogen reduction ; NiFe2O4 ; As-milled powders ; Energy dispersive spectrometry ; Hydrogen reduction ; Low temperatures ; Mechanically alloyed ; Micro-structural ; Nickel ferrite ; Oxide mixtures ; Phase identification ; Reduction reaction ; SEM ; Soft magnetic properties ; Steel balls ; TEM ; Vibration sample magnetometry ; Ferrite ; Hydrogen ; Magnetic properties ; Mechanical alloying ; Metallurgy ; Nanoparticles ; Scanning electron microscopy ; Synthesis (chemical) ; Vibration analysis ; X ray diffraction ; X ray diffraction analysis ; Nickel
  8. Source: Journal of Alloys and Compounds ; Volume 485, Issue 1-2 , 2009 , Pages 484-487 ; 09258388 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0925838809011426