Abstract
The paper considers kinetic studies lithium-zinc ferrite synthesis under heating by high-energy electron beam of mixtures of the initial Fe2O3 – Li2CO3 – ZnO reagents of different prehistory. We used samples of bulk density and compressed in hydraulic press. Radiation-thermal synthesis of samples was carried out an ILU-6 pulsed electron accelerator by heating of high-energy electrons with 2.4 MeV energy. Was spending heating to 600, 700, 750 °C and kept at 0 to 120 minutes. Formation of ferrite in conventional thermal annealing at similar temperature and time conditions was studied for comparison. Characterized method for studying synthesized samples was X-ray diffraction analysis. It is found that the rate of ferrite formation depends on both the heating method and the density of the initial mixture. It is shown that heating the mixture with an electron beam significantly accelerates the process of obtaining ferrite, which is manifested in a decrease of the kinetic parameters of ferrite synthesis. The increase the rate of ferrite formation under high-energy electron irradiation is due to a significant decrease in activation energy of synthesis process and decrease in pre-exponential multiplier in temperature dependence.
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