Zobrazeno 1 - 10
of 50
pro vyhledávání: '"S. N. Ivicheva"'
Publikováno v:
Russian Journal of Inorganic Chemistry. 67:1908-1918
Publikováno v:
Russian Journal of Inorganic Chemistry. 66:1183-1190
The conditions for β-SiAlON to be prepared by reacting highly dispersed mixed silicon and aluminum alkoxide xerogels with molecular nitrogen at 1600–1700°С are determined. The nitrogenation of mixed xerogels is shown to be due to the catalytic p
Autor:
S. N. Ivicheva, D. D. Titov, M. G. Frolova, K. A. Kim, Yu. F. Kargin, A. S. Lysenkov, D. V. Gridin, M. D. Mel’nikov, N. V. Petrakova
Publikováno v:
Russian Journal of Inorganic Chemistry. 66:1196-1202
The compaction of initial powders, the bending strength, and the microhardness of 21R sialon ceramics obtained by hot pressing have been studied experimentally. It is found that the Sm2O3 sintering additive substantially reduces the annealing tempera
Publikováno v:
Russian Journal of Inorganic Chemistry. 65:1820-1830
Specific features of the synthesis of sialons (SiAlON) in the Si–Al–O–N system by firing at 1600–1700°C in a nitrogen atmosphere of mixtures of different initial compositions corresponding to the same composition of the final product Si3Al3O
Autor:
A. S. Lysenkov, S. N. Perevislov, N. A. Ovsyannikov, A. A. Konovalov, Yu. F. Kargin, D. D. Titov, M. G. Frolova, K. A. Kim, S. N. Ivicheva
Publikováno v:
Inorganic Materials. 56:309-313
Si3N4–TiN ceramic composites have been produced by hot-pressing mixtures of silicon nitride and metallic titanium powders at temperatures from 1600 to 1800°C in a nitrogen atmosphere. We have examined the influence of the concentration and morphol
Autor:
S. N. Ivicheva, N. A. Ovsyannikov, Konstantin Solntsev, N. A. Alad’ev, A. S. Lysenkov, Yu. F. Kargin
Publikováno v:
Inorganic Materials: Applied Research. 11:488-494
The technique was developed, the installation was done, and the conditions for the production of Si3N4 and Si2N2O by the method of gas-phase pyrolysis of hexamethyldisilazane (CH3)3-Si-NH-Si-(CH3)3 (HMDS) were experimentally studied. In the experimen
Publikováno v:
Nanotechnologies in Russia. 13:565-577
The structure of nanocomposites based on opal matrices in relation to the type of filling the structural voids by amorphous and crystalline substances is investigated using small-angle X-ray and neutron scattering (SAXS and SANS, respectively). An an
Publikováno v:
Nanotechnologies in Russia. 13:356-364
The structure of nanocomposites based on opal matrices with different types of filling of structural voids is investigated. It is shown that the order in which tetrahedral and octahedral voids in the opal matrix are filled with various substances aff
Publikováno v:
Physics Procedia. 86:98-104
By repeatedly filling the octahedral and tetrahedral pores of 3D-silica opal matrices with silica sol doped with rare-earth elements with subsequent heat treatment globular photonic crystals filled with mesoporous glass and optically transparent phot
Publikováno v:
Inorganic Materials. 52:828-835
We have compared the intensity and shape of photoluminescence spectra of Tb3+ ions in mesoporous glasses, inorganic phosphors (terbium nitrate and terbium chloride hexahydrates), and coordination compounds (terbium benzoate, terbium o-phenoxybenzoate