Zobrazeno 1 - 10
of 24
pro vyhledávání: '"I. Yu. Okun"'
Publikováno v:
Powder Metallurgy and Metal Ceramics. 59:375-385
The paper examines the effect of high-energy grinding and post-treatment conditions on the structure and physical and mechanical properties of iron aluminide Fe–15 wt.% Al obtained by sintering and impulse hot pressing. It was shown that the grindi
Publikováno v:
METALLOFIZIKA I NOVEISHIE TEKHNOLOGII. 36:17-29
Publikováno v:
METALLOFIZIKA I NOVEISHIE TEKHNOLOGII. 36:217-228
Publikováno v:
Powder Metallurgy and Metal Ceramics. 54:416-427
The compaction, structure, and mechanical properties of Kh20N80 powder samples are studied. Most of the powder particles were 25 μm in size. The powders were compacted by impact sintering in vacuum at 1100, 1150, 1200, 1250, and 1300°C at an impact
Autor:
I. Yu. Okunev, M. N. Shestakova
Publikováno v:
Vestnik MGIMO-Universiteta, Vol 15, Iss 6, Pp 55-85 (2022)
In the post-pandemic years of 2021–2022, the post-Soviet space has entered a stage of decisive transformation, which will test the maturity of the state institutions formed 30 years ago for the region’s countries. The study captures a snapshot of
Externí odkaz:
https://doaj.org/article/c987ad66d2e94dcf83874a776d833058
Publikováno v:
Powder Metallurgy and Metal Ceramics. 50:625-631
The mechanical characteristics of ultrafine-grained WC–35 wt.% Ni composite produced by shortterm solid-phase pressing at different temperatures and at a pressure of ~1200 MPa are studied. The initial powder mixture consists of tungsten carbide and
Publikováno v:
Powder Metallurgy and Metal Ceramics. 50:313-321
The density and structure of an ultrafine-grained WC–35 wt.% Ni composite produced by short-term solid-phase compaction at different temperatures and about 1200 MPa are examined. The starting powder mixture consists of tungsten carbide and nickel o
Autor:
V. A. Nazarenko, D. G. Verbilo, V. A. Voropaev, Yu. N. Podrezov, K. A. Gogaev, O. S. Koryak, I. Yu. Okun
Publikováno v:
Powder Metallurgy and Metal Ceramics. 48:652-658
A method for producing strips by titanium powder rolling is proposed. The effect from powder annealing on the porosity of the initial billet is analyzed. The optimal temperatures of sintering and annealing after intermediate rolling are determined. I
Autor:
P. M. Silenko, A. Bykov, Andrey Ragulya, L. N. Kuz’menko, I. Yu. Okun, A. N. Shlapak, Tamara Tomila
Publikováno v:
Inorganic Materials. 44:388-394
We have studied Fe-catalyzed chemical vapor deposition of silicon carbide nanofibers via thermal decomposition of methyltrichlorosilane, CH3SiCl3, in hydrogen at temperatures from 1100 to 1350°C and the effects of synthesis temperature and time and
Publikováno v:
Materials Science. 42:330-343
We study new alloys of the Ti-Si-Al-Zr system. It is shown that the high-temperature and cyclic corrosion crack-growth resistances of cast materials remain practically constant up to temperatures of 700–800°C and in a 3% NaCl solution (pH = 7), re