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91.
E. V. Kozlov E. L. Nikonenko N. A. Koneva 《Bulletin of the Russian Academy of Sciences: Physics》2007,71(2):198-202
The Ni3Al phase with an L12 surperstructure exhibits a clearly pronounced positive temperature dependence of the yield stress. The nature of this phenomenon is still not clearly understood. The temperature dependence of the yield stress under consideration is determined, in many respects, by the structure of glide superdislocations and planar defects of these superdislocations involved in the L12 superstructure. A critical analysis is made of the current state of the art in the solution of the problem regarding the energy of antiphase boundaries in planes of an octahedron and a cube, as well as the energy of stacking faults in the Ni3Al phase. 相似文献
92.
A number of the main mechanical characteristics (yield strength, impact toughness, microhardness) of particulate-filled polymer nanocomposites are quantitatively described using fractal analysis. The approach is used to study the main mechanical behavior features of these materials. The influence of the initial particle size of nanofiller and the degree of particle aggregation on the mechanical properties of nanocomposites is shown. 相似文献
93.
Diana V. Aleksanyan Yulia V. Nelyubina Zinaida S. Klemenkova Vladimir A. Kozlov 《Phosphorus, sulfur, and silicon and the related elements》2014,189(7-8):1028-1042
AbstractNovel phosphorus-containing ligands have been synthesized by the condensation of 2-(thio)phosphorylated anilines with 2,6-dichloro- and 4-chloropyridine-2-carbonyl chlorides in the presence of Et3N and unsubstituted pyridine-2-carboxylic acid using P(OPh)3 as a coupling agent. The compounds derived readily form complexes with a range of transition metals (M=Re(I), Pd(II), and Cu(II)), serving as bi- or tridentate monoanionic ligands. The composition and structure of the resulting metallocycles depend both on the presence/amount of the Cl atoms in the pyridine ring and on the nature of the donor atom X in the P=X moiety. The novel compounds were characterized by multinuclear NMR and IR spectroscopy as well as X-ray crystallography. 相似文献
94.
S. G. Kostryukov A. V. Balandina A. Sh. Kozlov E. V. Kraynov M. K. Pryanichnikova O. Yu. Chernyaeva A. A. Akhmatova Yu. I. Lukshina 《Russian Journal of General Chemistry》2020,90(3):341-351
A new methodology for creating electroactive components for organic batteries,
based on the construction of a molecular platform including stable
3,4-dihydro-1,2,4,5-tetrazin-1(2H)-yl
radicals was described. A series of
2-(4-R1-phenyl)-6-(4-R2-phenyl)-4-phenyl-3,4-dihydro-1,2,4,5-tetrazin-1(2H)-yls with substituents of various nature was
obtained. It was shown that the substituents R1 in
the aromatic ring at position 2 of the tetrazinyl fragment influence the value
of the oxidation potential in the radical, but do not influence the value of the
reduction potentials, while the substituent R2 of the
aromatic ring at position 6 influence the values of the reduction potentials and
practically do not influence oxidation potential values. Based on the obtained
electrochemical data, a correlation structure–potential value was revealed for
the cathodic and anodic process, with the help of which triarylsubstituted
3,4-dihydro-1,2,4,5-tetrazin-1(2H)-yl
radicals with high values of the electrochemical gap were obtained. 相似文献
95.
96.
S. S. Bulanov R. U. Esiev A. S. Kamrukov N. P. Kozlov M. I. Morozov I. A. Roslyakov 《Technical Physics》2010,55(11):1633-1640
The results of experimental study of explosive radiation sources based on pulsed injection of a cumulative plasma jet into
atmospheric air are considered. The injection process is accompanied with intense vortex formation as well as the formation
of a large-scale toroidal plasma vortex. High-power electromagnetic radiation in the optical range is generated due to shock-wave
processes during deceleration of a plasma jet in air and plasma-chemical processes in the vortex. The temporal structure of
a radiation pulse being generated contains components from the micro- and millisecond range. For a 20-g mass of the explosive
charge, a peak radiation power of 300 kW/sr and an energy yield of 400–600 J/sr integrated over the emission spectrum are
attained. The efficiency of conversion of the chemical energy of the explosive into radiation is 5.0–7.5%. 相似文献
97.
98.
A. M. Anpilov E. M. Barkhudarov N. K. Berezhetskaya S. I. Gritsinin A. M. Davydov Yu. N. Kozlov I. A. Kossyi M. A. Misakyan S. M. Temchin V. G. Ralchenko P. A. Gushchin E. V. Ivanov 《Technical Physics》2011,56(11):1588-1592
The multielectrode slipping surface discharge in a two-phase water-gas (methane) medium is studied experimentally as a plasma-chemical converter of methane into various hydrocarbons, carbon, and hydrogen. The energy value of methane decomposition is on the order of 5 eV/molecule, which is close to record-high values attained in high-pressure discharges. The degree of conversion of methane is determined and the possibility of its substantial increase is considered. 相似文献
99.
D. I. Sevostianov V. P. Yakovlev A. N. Kozlov V. V. Vasil’ev S. A. Zibrov V. L. Velichansky 《Bulletin of the Lebedev Physics Institute》2014,41(4):89-94
Modulation characteristics of absorption at the resonance D 1 line of cesium atoms in a cell with antirelaxation coating are studied. It is experimentally shown that the minimum of the response to harmonic modulation in a certain frequency band coincides with Maxwellian velocity distribution maximum, despite the line profile distortion observed during linear frequency scanning [1]. The effect is theoretically explained. 相似文献
100.