Zobrazeno 1 - 10
of 31
pro vyhledávání: '"T. S. Bartnitskaya"'
Autor:
V. I. Lyashenko, V. B. Zelyavskii, Alexander V. Kurdyumov, T. R. Balan, T. S. Bartnitskaya, S. N. Gromyko, A. I. Danilenko, V. F. Britun
Publikováno v:
Powder Metallurgy and Metal Ceramics. 44:590-597
We have used chemical analysis, x-ray diffractometry, transmission and scanning electron microscopy, and also measurement of the specific surface area to study the characteristic patterns of nitriding and structure formation in graphite-like BN powde
Autor:
N. V. Danilenko, T. S. Bartnitskaya, Vladimir A. Lavrenko, G. A. Shkurko, G. N. Makarenko, N. V. Boshitskaya
Publikováno v:
Powder Metallurgy and Metal Ceramics. 39:157-162
The effect of particle size and morphology on the degree of dissolution of commercial AlN powder, fiber crystals, and nanoparticles in physiological solution, blood serum, gastric juice, and control media with the same values of pH was determined. Th
Publikováno v:
Powder Metallurgy and Metal Ceramics. 38:240-245
The effect of preliminary heat treatment (PHT) of hydrated cellulose fibers impregnated with an ammonium tetraborate solution on the composition and structure of nitrided products was studied. The PHT conditions which upon subsequent nitriding led to
Publikováno v:
Powder Metallurgy and Metal Ceramics. 38:152-156
The decomposition of hydrated cellulose impregnated with boric acid or ammonium tetraborate was studied using differential thermal, mass spectroscopic, X-ray diffraction, and chemical analysis, as well as electron microscopy. The temperature range of
Publikováno v:
Journal of Experimental and Theoretical Physics Letters. 69:163-168
The structure and mechanism of formation and growth are investigated for two forms of BN nanotubes produced by carbothermal synthesis.
Publikováno v:
Powder Metallurgy and Metal Ceramics. 37:26-32
Autor:
S. N. Gromyko, V. B. Zelyavskii, V. F. Britun, T. S. Bartnitskaya, Alexander V. Kurdyumov, L. A. Lyudvinskaya
Publikováno v:
Powder Metallurgy and Metal Ceramics. 36:425-429
The structure of SiC–AlN powders is investigated by x-ray diffraction and transmission electron microscopy methods. The powders were produced by joint carbon reduction and nitriding of silicon and aluminum oxide mixtures. The results show that a mi
Autor:
Alexander V. Kurdyumov, N. F. Ostrovskaya, V. I. Lyashenko, T. S. Bartnitskaya, V. B. Zelyavskii
Publikováno v:
Powder Metallurgy and Metal Ceramics. 35:636-639
We have investigated the reaction between disordered (turbostratic) boron nitride and lithium carbonate under a nitrogen atmosphere using x rays and electron microscopy. Lithium borate and cyanamide were found to be the reaction products at a tempera
Autor:
T. S. Bartnitskaya, N. P. Tel'nikova, G. N. Makarenko, N. M. Danilenko, Vladimir A. Lavrenko, N. V. Boskitskaya
Publikováno v:
Powder Metallurgy and Metal Ceramics. 35:497-500
We have used chemical and x-ray analysis to study the stability and phase composition of silicon nitride powders with different panicle size ranges and morphology in biochemical media (physiological solution, gastric juice, blood serum) at 37°C. We
Autor:
T. S. Bartnitskaya, N. F. Ostrovskaya, Alexander V. Kurdyumov, V. I. Lyashenko, I. G. Rogovaya
Publikováno v:
Powder Metallurgy and Metal Ceramics. 35:296-300
It is well-known [1, 2] that lithium compounds have a strong effect on the process of formation of boron nitride by the carbothermal method from highly dispersed charges produced by the dissolution method. It is therefore interesting to examine the e