Interaction of lithium-titanium ceramics with air during sintering

被引：2
作者：
Ghyngazov S.A. [1 ]
Lisenko E.N. [1 ]
Petyukevich M.S. [1 ]
Frangulyan T.S. [1 ]
机构：
[1] Tomsk Polytechnic University,
来源：
Russian Physics Journal | 2007年 / 50卷 / 2期
基金：
俄罗斯基础研究基金会;
关键词：
Ferrite; Subsurface Layer; Isothermal Tempering; Isothermal Exposure; Thermal Gravimetry;
D O I：
10.1007/s11182-007-0018-3
中图分类号：
学科分类号：
摘要：
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. © 2007 Springer Science+Business Media, Inc.
引用
收藏
页码：134 / 139
页数：5
相关论文
共 7 条
  • [1] Levin B.E., Tretyakov Yu. D., Physico-Chemical Fundamental Principles of Production of Ferrites, Their Properties and Application, (1979)
  • [2] Letyuk L.M., Zhuravlev G.I., Chemistry and Technology of Ferrites, (1983)
  • [3] Surzhikov A.P., Pritulov A.M., Ghyngazov S.A., Lisenko E.N., Promising Materials [In Russian], 6, pp. 90-94, (1999)
  • [4] Pavlov L.P., Methods for Measuring Parameters of Semiconducting Materials, (1987)
  • [5] Surzhikov A.P., Peshev V.V., Pritulov A.M., Ghyngazov S.A., Rus. Phys. J., 5, pp. 490-495, (1999)
  • [6] Surzhikov A.P., Lisenko E.N., Ghyngazov S.A., Frangulyan T.S., Rus. Phys. J., 3, pp. 56-60, (2004)
  • [7] Parfyonov A.A., Gubanova I.A., Staroverova M.E., Inorganic Materials, 31, pp. 1577-1579, (1995)
1