Zobrazeno 1 - 10
of 39
pro vyhledávání: '"I. I. Chuev"'
Publikováno v:
Ceramics International. 47:32626-32633
In this study, we report on the process to fabricate powder of high-entropy carbide (TiTaNbZrHf)С. We have obtained a high-entropy carbide phase by two-step high-energy ball milling (HEBM) of metallic precursors and carbon. At the first stage of HEB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78b2e7dfff27844edfa60c81bf4b8626
https://doi.org/10.1016/j.ceramint.2021.08.158
https://doi.org/10.1016/j.ceramint.2021.08.158
Publikováno v:
International Journal of Self-Propagating High-Temperature Synthesis. 30:15-21
Total energy ab-initio calculations for some SHS products were performed by DFT method using VASP program package. The results of calculations along with XRD results and crystallographic modeling were used to explain specific features of the composit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eba463ea54f603ddf1df37be612312f8
https://doi.org/10.3103/s1061386221010052
https://doi.org/10.3103/s1061386221010052
Publikováno v:
Physics of Metals and Metallography. 121:1188-1192
—The enthalpies of formation of γ- and δ-modifications of the TiCu phase were estimated using the density-functional method. The enthalpies of formation are –22 and –12.8 kJ/mol for the γ- and δ-TiCu, respectively. The comparison of X-ray d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ead4de92d4ca5d664aa46ca0b7a3de7b
https://doi.org/10.1134/s0031918x20120078
https://doi.org/10.1134/s0031918x20120078
Autor:
I. I. Chuev, D. Yu. Kovalev
Publikováno v:
Technical Physics. 65:1652-1658
Systematic data on the amorphous–crystalline transition in Ni have been obtained by high-temperature X-ray diffraction analysis. It is established that the amorphous structure of Ni nanoparticles is stable up to 200°C. Ni nanocrystals, which have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d5f1e9517c49f75b33b0e20b30eb57f
https://doi.org/10.1134/s1063784220100102
https://doi.org/10.1134/s1063784220100102
Publikováno v:
Russian Journal of Physical Chemistry A. 94:1369-1374
The stability of the kappa phase of compounds Me3+xW10–xC3+y (Me = Fe, Co, Ni) is calculated using the density functional theory. Crystal structures with disordered positions are calculated using an additive approach. The crystal structure of the k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1ab880e233d4cc3e1b2c0bf94165267
https://doi.org/10.1134/s0036024420070080
https://doi.org/10.1134/s0036024420070080
Publikováno v:
Inorganic Materials. 56:572-576
The composition and structure of a new compound, Ni3.35W9.65C4, have been determined by comparing X-ray powder diffraction, crystal-chemical modeling, and density functional quantum-chemical calculation (VASP program) results. The compound, in cast f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6eb3dd6b1f6ac8aa182434a53f78ed4a
https://doi.org/10.1134/s0020168520060072
https://doi.org/10.1134/s0020168520060072
Autor:
S. V. Konovalikhin, I. I. Chuev, I. D. Kovalev, V. I. Vershinnikov, D. Yu. Kovalev, V. I. Ponomarev
Publikováno v:
Journal of Solid State Chemistry. 290:121579
Boron carbide crystals of various compositions were studied by X-ray powder diffraction in the temperature range of 25-700 °C. The formation of a metastable structure of boron carbide under the conditions of self-propagating high-temperature synt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::816c82830bbb8a966bdf3a08c80bd78a
https://doi.org/10.1016/j.jssc.2020.121579
https://doi.org/10.1016/j.jssc.2020.121579
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 548:123-132
Semi-empirical quantum chemical investigations of three [2 H ]-chromene compounds with similar molecular structures but with different numbers of photoisomers were carried out. The reaction coordinates of pyran-ring cycle opening in the ground and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2775e23d72a8e87efafbff5096f87b48
https://doi.org/10.1016/s0166-1280(01)00516-4
https://doi.org/10.1016/s0166-1280(01)00516-4
Publikováno v:
Crystallography Reports. 46:394-397
Crystals of (N′-furfurylidene)isonicotinoylhydrazide (I), which have been isolated from a water-methanol solution of hydrochloric acid (Ia) and an aqueous solution (∼50%) of acetic acid (Ib), are studied by X-ray diffraction. In Ia, the nitrogen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c18796de16f0da785c217c23a8beeb6
https://doi.org/10.1134/1.1376467
https://doi.org/10.1134/1.1376467
Autor:
S. M. Aldoshin, E. G. Atovmyan, I. I. Chuev, O. A. Rakova, Natalia A. Sanina, Nikolai S. Ovanesyan
Publikováno v:
Russian Journal of Coordination Chemistry. 27:179-183
Iron nitrosyl complexes with general formula [Q4N]2[Fe2(S2O3)2(NO)4] (Q = Me, Et, n-Pr, n-Bu) were synthesized by the exchange reaction of K2[Fe2(S2O3)2(NO)4] with tetraalkylammonium bromides. The molecular and crystal structure of [(CH3)4N]2[Fe2(S2O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::748dbb1c3517ba03883077bca475f1e0
https://doi.org/10.1023/a:1009598228585
https://doi.org/10.1023/a:1009598228585