Zobrazeno 1 - 10
of 48
pro vyhledávání: '"N. A. Mikhailina"'
Publikováno v:
Crystallography Reports. 67:278-285
Autor:
A. A. Il’icheva, T. N. Penkina, L. I. Podzorova, N. A. Mikhailina, S. A. Titov, O. I. Pen’kova, L. I. Shvorneva, V. E. Gubareva
Publikováno v:
Inorganic Materials: Applied Research. 8:713-717
The effect of low-temperature aging of ceramics Zr0.97Y0.03O2 (Y-TZP) and Zr0.98Y0.02O2 (Yb-TZP) by the methods of the high-grade diffraction analysis and atomic force microckopy is studied. Formation of the phase M-ZrO2 in ceramic (Y-TZP) in a large
Publikováno v:
Russian Journal of Physical Chemistry A. 90:2370-2376
The physicochemical and catalytic properties of Cu-containing crystalline zirconia, obtained via sol–gel synthesis in the presence of Yb3+ ions and polyvinylpyrrolidone, are studied. DTG/DSC, TEM, XRD and BET methods are used to analyze the crystal
Autor:
S. V. Anisimova, L. I. Podzorova, I. Yu. Lebedenko, O. A. Ovchinnikova, M. N. Rumyantseva, A. I. Lebedenko, L. I. Shvorneva, V. I. Khvan, N. A. Mikhailina
Publikováno v:
Inorganic Materials: Applied Research. 1:335-338
It is experimentally shown that the developed technique of synthesis of the nanopowders of tetragonal ZrO2, stabilized by Y2O3 and Yb2O3, makes it possible to obtain ceramic materials with high parameters of durability and purity having thin microstr
Autor:
A. A. Il’icheva, N. A. Mikhailina, L. I. Podzorova, S. V. Kutsev, O. I. Pen’kova, L. I. Shvorneva
Publikováno v:
Glass Physics and Chemistry. 33:510-514
The phase transformations in nanosized precursors (precipitation products) prepared by the sol-gel processing and the formation of the microstructure of ceramic materials in the t-ZrO2-Al2O3 system are investigated. It is demonstrated that the phase
Publikováno v:
Inorganic Materials. 38:1235-1240
Data are presented on the phase composition of ZrO2–Al2O3–CeO2 powders containing 10, 30, and 70 mol %, prepared via coprecipitation and successive precipitation. The precipitation procedure is shown to have a strong effect on the phase compositi
Autor:
A. A. Il’icheva, L. I. Podzorova, V. Ya. Shevchenko, L. I. Shvorneva, N. A. Mikhailina, D. S. Bashlykov, G. V. Rodicheva
Publikováno v:
Inorganic Materials. 37:51-57
The morphology and phase composition of ultrafine ZrO2–CeO2–Al2O3 powders prepared by heat-treating coprecipitated and successively precipitated hydroxides were shown to depend on the precipitation procedure. The relative amounts of tetragonal an
Publikováno v:
Refractories and Industrial Ceramics. 40:309-312
The effect of Lu2O3 on low-temperature stabilization of the tetragonal modification of ZrO2 is considered. The subject of study is ZrO2 - Lu2O3 binary systems with 1 –9 mole % Lu2O3 for specimens of ZrO2 powders prepared by the method invented by t
Autor:
L. I. Podzorova, N. A. Mikhailina, A. A. Il’icheva, A. D. Izotov, Lazarev Vladislav B, V. Ya. Shevchenko
Publikováno v:
Refractories. 36:163-166
An experiment on precipitation of zirconia by urea, urotropin, and ammonium hydroxide precipitants is described. The morphological and phase composition of the precipitated powders are investigated. It is shown that a buffer has a positive effect on
Publikováno v:
Refractories. 35:46-50
The mechanical properties of transformation-toughened ceramics of the composition ZrO2 + 12% CeO2 with additives of CaO, Y2O3, and Nb2O5 in an amount of 1% (molar fractions) have been studied. Doping increases the strength and cracking resistance of