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排序方式: 共有276条查询结果,搜索用时 522 毫秒
1.
Theoretical Foundations of Chemical Engineering - The main approaches to developing a reactor block for the hydrodesulfurization of diesel fuels are considered taking into account the reactivity of... 相似文献
2.
Ustinov V. S. Volkov A. N. Samoilov O. B. Morozov O. A. Polyanskikh S. A. Alekseev V. I. Galitskikh V. Yu. 《Atomic Energy》2021,130(2):69-75
Atomic Energy - The physical aspects and main results of reactor tests of a two-stage core consisting of fresh fuel assemblies and a significant number of fuel assemblies from the previous core,... 相似文献
3.
E. E. Loginova A. I. Orlova D. A. Mikhailov A. N. Troshin E. Yu. Borovikova S. G. Samoilov G. N. Kazantsev A. Yu. Kazakova V. T. Demarin 《Radiochemistry》2011,53(6):593-603
New pollucite-like phosphorus-containing compounds with cesium and uni-, bi-, and trivalent cations (Li; Mg, Mn, Co, Ni, Cu,
Zn, Cd, Sr, Ba; Al, Cr, Fe), many of which can be present in various combinations in wastes from radiochemical processes,
were synthesized. The individual phases obtained were characterized by X-ray phase analysis and IR spectroscopy. The symmetry
of the unit cells of the phosphorus-containing compounds decreases relative to the silicon analog (pollucite natural mineral)
from Ia3d to I4132. The behavior of the compounds on heating to 1000°C, under hydrothermal conditions at 90°C, in aqueous systems (distilled
water and seawater) at 25°C, and in a CsCl melt at 680°C was studied. The chemical and phase composition of the samples remained
unchanged under all these conditions. The Cs leaching rates varied from 7.1 × 10−6 to 1.46 × 10−5 g cm−2 day−1. The “crystal-chemical modeling” of the new possible compositions of the compounds with the expected pollucite structure
was performed. 相似文献
4.
K. A. Bakhmet’ev A. V. Konovalov O. A. Sinkevich I. S. Samoilov 《High Temperature》2011,49(2):168-177
A model making it possible to calculate the emission currents in a cathode and its volt-ampere characteristic (VAC) taking
the phenomena in the near-cathode plasma layer into account is proposed. The effect of plasma electrons and ions, thermal
field-emission processes, and radiation from the plasma and evaporation of the cathode material are taken into account. The
fields of the electrical potential and temperature in the cathode body, with the Joule heat release taken into account, are
calculated. The numerical simulation yielded the conditions causing the volt-ampere characteristic ambiguity in the near-cathode
layer in the absence of a liquid cathode spot. The obtained characteristics make it possible to estimate the lifetime and
efficiency of a plasmotron with a tungsten cathode and argon serving as an actuating medium used in a number of plasma technologies. 相似文献
5.
6.
F A Khromchenko V A Lappa V V Veter M I Samoilov N Apripadcheva 《Welding International》2013,27(12):975-978
The main types of flux-cored strip electrode materials for mechanized arc surfacing of alloyed and composite alloys are discussed. Surfacing with these strips results in the formation of the required properties of the working surfaces of components. Special features of the melting and formation of the deposited layer with the required welding and technological properties are also discussed, taking into account the production technology of flux-cored strips. 相似文献
7.
Dipl.-Ing. Gregor Arth Andrej Samoilov 《BHM Berg- und Hüttenm?nnische Monatshefte》2012,157(8-9):306-312
Metal-Matrix-Composites use a reinforcing phase to improve the mechanical properties of the matrix material or achieve a weight reduction. For example in iron and steel industrial applications typically carbides and borides are used to improve wear resistance. The intention of current investigations at the Chair of Metallurgy at the Montanuniversitaet Leoben is to produce a composite with reduced density and consistent or increased stiffness as steel. This paper reviews possible processing routes on steel composites with ceramic reinforcing phases based on a literature survey. A classification of the processing steps based on the origin of the ceramic phase is made and the advantages and disadvantages of these steps are summarized. Two tables are given to present the high amount of possible producing steps and the used investigation techniques for steel-based metal matrix composites. 相似文献
8.
A. I. Orlova S. G. Samoilov G. N. Kazantsev V. Yu. Volgutov A. Yu. Kazakova 《Radiochemistry》2010,52(6):666-669
Erbium zirconium phosphate Er0.33Zr2(PO4)3, a member of the family of structural analogs of NaZr2(PO4)3 (NZP), was prepared by the sol-gel process and studied by X-ray phase analysis, IR spectroscopy, and differential scanning
calorimetry. The behavior of erbium zirconium phosphate on heating in the temperature interval from 25 to 625°C was studied
by high-temperature X-ray diffraction. Expansion and contraction along different crystallographic directions and contraction
of the structure as a whole were found. The overall contraction is due to higher contribution of the negative axial thermal
expansion coefficients α
a
and α
b
to αav and hence to the volume expansion of the phosphate. On heating to 900°C, the NZP structure is preserved. 相似文献
9.
Samoilov V. I. Onalbaeva Zh. S. Adylkanova M. A. Kokaeva G. A. Abdulina S. A. 《Metallurgist》2018,62(3-4):361-368
Metallurgist - Experimental research is conducted for recovery of lithium from lepidolite. A method is developed for alkaline decomposition of lepidolite based on melting with calcined soda and... 相似文献
10.