The influence of reagents ball milling on the lithium ferrite formation

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2 Citations (Scopus)

Abstract

In this work, the effect of ball milling of Li 2 CO 3 and Fe 2 O 3 reagents on the Li 0.5 Fe 2.5 O 4 ferrite formation was studied by thermogravimetric and differential scanning calorimetric measurements using non-isothermal heating and cooling modes. In the latter case, the analysis was carried out with a magnetic field applied in order to estimate the Curie temperature of the synthesized ferrite. The mechanical milling of both individual Li 2 CO 3 /Fe 2 O 3 reagents and their mixture was performed with an AGO-2C planetary mill using steel vials and balls. Samples with different bulk densities, which were compacted from non-milled and milled powders by pressing with different compaction pressures, were investigated. The results showed that the mechanical milling of powder reagents separately does not cause a significant change in the reactivity of the ferrite system. Only milling of the Li 2 CO 3 /Fe 2 O 3 mixture makes it possible not only to increase the reactivity of powders, but also to exclude additional compaction of samples before synthesis.

Original languageEnglish
JournalJournal of Thermal Analysis and Calorimetry
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Ball milling
  • Li Fe O
  • Lithium ferrite
  • Mechanical activation
  • Thermal analysis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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