Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Yu. N. Stepanov"'
Autor:
Yu. N. Stepanov, S. A. Tikhomirov
Publikováno v:
Russian Metallurgy (Metally). 2007:179-183
The initial stage of nanopowder sintering at low temperatures has been theoretically studied. Analytical expressions are obtained to control the nanopowder shrinkage at this stage. They also indicate that the nanopowder densification and the increase
Autor:
Michail I. Alymov, Yu. N. Stepanov
Publikováno v:
Russian Metallurgy (Metally). 2006:505-507
The sintering of needle and spherical particles is considered in terms of a diffusionless sintering model based on the idea that the sintering of nanoparticles smaller than 70 nm is determined by their fluctuational melting. It has been shown that th
Autor:
E. E. Tungusova, V. K. Kurochkin, Yu. L. Kruglyak, Yu. N. Stepanov, A. M. Kvetnyi, I. I. Kashnikova, V. S. Dobryanskii, L. N. Shitov
Publikováno v:
Pharmaceutical Chemistry Journal. 31:584-588
Publikováno v:
Glass Physics and Chemistry. 31:337-339
An expression describing the shrinkage rate of compacts composed of nanoparticles is obtained under the assumption that nanoparticles undergo fluctuation melting. The expression derived has the following form: dY/dt = Aexp(−(TM + q)/T), where dY/dt
Publikováno v:
Nanostructured Materials. 4:737-742
In this paper, a model of the initial stage of sintering of ultrafine powders, which is in agreement with the experimentally found dependence between the temperature of sintering start (TSS) and the size of powder particles, is proposed. The ratio TS
Autor:
A. M. Kvetnyi, I. I. Kashnikova, Yu. L. Kruglyak, Yu. N. Stepanov, L. N. Shitov, V. S. Dobryanskii, E. E. Tungusova, V. K. Kurochkin
Publikováno v:
ChemInform. 29
Autor:
A. N. Khodinskii, Nikolai S. Kazak, A. S. Uzunbadzhakov, A. V. Kireev, Yu. N. Stepanov, V. N. Myshkovets, S. P. Andreev, S. A. Naumovich, A. P. Dmitrochenko, V. K. Pavlenko, V. V. Yanchenko, S. I. Eliseev, A. B. Ryabtsev, L. I. Stratskevich, A. A. Ryzhevich
Publikováno v:
Journal of Optical Technology. 67:990
Autor:
Yu N. Stepanov
Publikováno v:
Rubber Chemistry and Technology. 45:1630-1633
Upon storage of deformed mixes at controlled temperature the relaxation of elastic deformation in most cases occurs at the same time as crosslinking. The segmental mobility of the chains of the rubber disappears rapidly with the formation of crosslin
Publikováno v:
Metal Science and Heat Treatment. 21:881-883
1. Titanium alloys with 9% Al and 3% Zr and varying amounts of tungsten (0–10%) undergo brittle fracture in the forged condition (without heat treatment) at 20°. 2. After annealing at 900° for 1 h and stepped annealing at 900° for 20 h+800° for