Investigation of kinetics of lithium ferrite formation under electron beam treatment

Abstract

The paper considers kinetic laws of lithium ferrite synthesis under heating of mixtures of the initial Fe₂O₃–Li₂CO₃ reagents of different prehistory (powder, compact, mechanically activated mixture) with a high-energy electron beam. The synthesis temperature range was (600–750) °C, and the holding time was up to 120 min. The study employed an ILU-6 pulsed accelerator with electron energy of 2.4 MeV. Formation of ferrite in conventional thermal annealing at similar temperature and time conditions was studied for comparison. XRD analysis was the main method to study the synthesized samples. It is found that the rate of ferrite formation depends on both the heating method and the density and activity of the initial mixture. It is shown that high-energy electron beam heating of the mechanically activated mixture significantly accelerates ferrite production, which is indicated by decreased kinetic parameters of ferrite synthesis.

Original language	English
Pages (from-to)	31-36
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	466
DOIs	https://doi.org/10.1016/j.nimb.2020.01.010
Publication status	Published - 1 Mar 2020

Keywords

Electron beam
Lithium ferrites
Mechanical activation
Radiation-thermal heating

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2020.01.010

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@article{ed640959abd846bfa9327578521b186e,

title = "Investigation of kinetics of lithium ferrite formation under electron beam treatment",

abstract = "The paper considers kinetic laws of lithium ferrite synthesis under heating of mixtures of the initial Fe2O3–Li2CO3 reagents of different prehistory (powder, compact, mechanically activated mixture) with a high-energy electron beam. The synthesis temperature range was (600–750) °C, and the holding time was up to 120 min. The study employed an ILU-6 pulsed accelerator with electron energy of 2.4 MeV. Formation of ferrite in conventional thermal annealing at similar temperature and time conditions was studied for comparison. XRD analysis was the main method to study the synthesized samples. It is found that the rate of ferrite formation depends on both the heating method and the density and activity of the initial mixture. It is shown that high-energy electron beam heating of the mechanically activated mixture significantly accelerates ferrite production, which is indicated by decreased kinetic parameters of ferrite synthesis.",

keywords = "Electron beam, Lithium ferrites, Mechanical activation, Radiation-thermal heating",

author = "Lysenko, {E. N.} and Vlasov, {V. A.} and Surzhikov, {A. P.}",

year = "2020",

month = mar,

day = "1",

doi = "10.1016/j.nimb.2020.01.010",

language = "English",

volume = "466",

pages = "31--36",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

issn = "0168-583X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Investigation of kinetics of lithium ferrite formation under electron beam treatment

AU - Lysenko, E. N.

AU - Vlasov, V. A.

AU - Surzhikov, A. P.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - The paper considers kinetic laws of lithium ferrite synthesis under heating of mixtures of the initial Fe2O3–Li2CO3 reagents of different prehistory (powder, compact, mechanically activated mixture) with a high-energy electron beam. The synthesis temperature range was (600–750) °C, and the holding time was up to 120 min. The study employed an ILU-6 pulsed accelerator with electron energy of 2.4 MeV. Formation of ferrite in conventional thermal annealing at similar temperature and time conditions was studied for comparison. XRD analysis was the main method to study the synthesized samples. It is found that the rate of ferrite formation depends on both the heating method and the density and activity of the initial mixture. It is shown that high-energy electron beam heating of the mechanically activated mixture significantly accelerates ferrite production, which is indicated by decreased kinetic parameters of ferrite synthesis.

AB - The paper considers kinetic laws of lithium ferrite synthesis under heating of mixtures of the initial Fe2O3–Li2CO3 reagents of different prehistory (powder, compact, mechanically activated mixture) with a high-energy electron beam. The synthesis temperature range was (600–750) °C, and the holding time was up to 120 min. The study employed an ILU-6 pulsed accelerator with electron energy of 2.4 MeV. Formation of ferrite in conventional thermal annealing at similar temperature and time conditions was studied for comparison. XRD analysis was the main method to study the synthesized samples. It is found that the rate of ferrite formation depends on both the heating method and the density and activity of the initial mixture. It is shown that high-energy electron beam heating of the mechanically activated mixture significantly accelerates ferrite production, which is indicated by decreased kinetic parameters of ferrite synthesis.

KW - Electron beam

KW - Lithium ferrites

KW - Mechanical activation

KW - Radiation-thermal heating

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U2 - 10.1016/j.nimb.2020.01.010

DO - 10.1016/j.nimb.2020.01.010

M3 - Article

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VL - 466

SP - 31

EP - 36

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

ER -