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.
| Original language | English |
|---|---|
| Pages (from-to) | 134-139 |
| Number of pages | 6 |
| Journal | Russian Physics Journal |
| Volume | 50 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2007 |
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- Physics and Astronomy(all)
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Interaction of lithium-titanium ceramics with air during sintering. / Ghyngazov, S. A.; Lisenko, E. N.; Petyukevich, Maria Stanislavovna; Frangulyan, T. S.
In: Russian Physics Journal, Vol. 50, No. 2, 01.02.2007, p. 134-139.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Interaction of lithium-titanium ceramics with air during sintering
AU - Ghyngazov, S. A.
AU - Lisenko, E. N.
AU - Petyukevich, Maria Stanislavovna
AU - Frangulyan, T. S.
PY - 2007/2/1
Y1 - 2007/2/1
N2 - 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.
AB - 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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U2 - 10.1007/s11182-007-0018-3
DO - 10.1007/s11182-007-0018-3
M3 - Article
VL - 50
SP - 134
EP - 139
JO - Russian Physics Journal
JF - Russian Physics Journal
SN - 1064-8887
IS - 2
ER -