Abstract
Interaction of lithium-titanium polycrystalline ferrites with ambient air during their sintering is investigated using the methods of electroconductivity and thermal gravimetry within the temperature interval T = 600–1300 K. It is found out that the temperatures exceeding T = 1100 K correspond to effective course of reducing reactions in this material, which results in the formation of an oxygen-deficient ceramic structure in the stage of isothermal tempering (T = 1280 K). It is shown that in the final cooling stage the process of exchange of the ferrite ceramics with the ambient atmosphere exhibits a pronounced oxidative character. The role of these redox processes in the formation of the oxygen non-stoichiometry of the sintered specimen and the depth of its distribution are analyzed.
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References
B. E. Levin and Yu. D. Tretyakov, Physico-Chemical Fundamental Principles of Production of Ferrites, Their Properties and Application [in Russian], Moscow, Metallurgyia (1979).
L. M. Letyuk and G. I. Zhuravlev, Chemistry and Technology of Ferrites [in Russian], Leningrad, Khimiya (1983).
A. P. Surzhikov, A. M. Pritulov, S. A. Ghyngazov, and E. N. Lisenko, Promising Materials [in Russian], No. 6, 90–94 (1999).
L. P. Pavlov, Methods for Measuring Parameters of Semiconducting Materials [in Russian], Moscow, Vysshaya Shkola (1987).
A. P. Surzhikov, V. V. Peshev, A. M. Pritulov, and S. A. Ghyngazov, Rus. Phys. J., No. 5, 490–495 (1999).
A. P. Surzhikov, E. N. Lisenko, S. A. Ghyngazov, and T. S. Frangulyan, Rus. Phys. J., No. 3, 56–60 (2004).
A. A. Parfyonov, I. A. Gubanova, and M. E. Staroverova, Inorganic Materials [in Russian], 31, No. 12, 1577–1579 (1995).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 35–40, February, 2007.
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Ghyngazov, S.A., Lisenko, E.N., Petyukevich, M.S. et al. Interaction of lithium-titanium ceramics with air during sintering. Russ Phys J 50, 134–139 (2007). https://doi.org/10.1007/s11182-007-0018-3
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DOI: https://doi.org/10.1007/s11182-007-0018-3