Microstructure and thermal analysis of lithium ferrite pre-milled in a high-energy ball mill

Результат исследований: Материалы для журналаСтатья

6 Цитирования (Scopus)

Аннотация

In this work, the effect of ball milling of synthesized LiFe5O8 ferrite powders on the microstructure and properties of ferrite ceramics was studied by XRD, laser diffraction and SEM analysis as well as thermal analysis. The mechanical milling of LiFe5O8 was carried out in a Fritsch Pulverisette 7 planetary mill using the zirconia or steel grinding balls. The process of ferrite sintering was investigated using dilatometric analysis. In addition, ferrite ceramics electromagnetic properties, including magnetization, Curie point and electrical resistivity, were investigated. The results showed a strong difference in the structure of ferrite ceramics obtained from ferrite powders pre-milled by zirconia or steel grinding balls. Thus, the milling results in a decrease in the particle size of the ferrite powders to ultrafine range. The ferrite ceramics, obtained from powder milled by steel balls, is characterized by high density and low porosity as well as good electromagnetic properties and the main presence of a disordered β-LiFe5O8 phase. However, the mechanical milling using zirconia balls leads to the contamination of ferrite by zirconia, resulting in the formation of β-LiFe5O8/ZrO2 composite ceramics during sintering.

Язык оригиналаАнглийский
Страницы (с-по)127-133
Число страниц7
ЖурналJournal of Thermal Analysis and Calorimetry
Том134
Номер выпуска1
DOI
СостояниеОпубликовано - 1 окт 2018

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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  • Виды деятельности

    • 1 Участие в конференции

    12th European Symposium on Thermal Analysis and Calorimetry (ESTAC12)

    Vitaly Anatolievich Vlasov (Участник), , Sergey Anatolievich Ghyngazov (Участник), , Elena Nikolaevna Lysenko (Участник), , Evgeny Vladimirovich Nikolaev (Участник), & Alexander Leonidovich Astafyev (Участник)

    27 авг 201830 авг 2018

    Деятельность: Участие в конференции

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