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10 results on '"M. G. Golkovski"'

2. Effect of Annealing on the Luminescence of YAG:Ce and YAGG:Ce Ceramics Synthesized in a Radiation Field

Author

V. M. Lisitsyn, A. I. Kupchishin, M. G. Golkovski, D. A. Mussakhanov, S. A. Stepanov, Zh. T. Karipbayev, and A. T. Tulegenova

Subjects
010302 applied physics, Materials science, 010308 nuclear & particles physics, Annealing (metallurgy), business.industry, Radiation field, General Physics and Astronomy, Electron, 01 natural sciences, visual_art, 0103 physical sciences, visual_art.visual_art_medium, Optoelectronics, Ceramic, business, Luminescence, Excitation
Abstract

YAG:Ce ceramics are synthesized from charges of stoichiometrical composition in the field of a powerful stream of high-energy electrons. The structure of the resulting ceramics is characteristic of YAG:Се, and intense luminescence of the ceramics is observed upon UV excitation by chips at 460 nm. High-temperature annealing alters the color of the ceramics.

Published
2020
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3. Formation of luminescing high-temperature ceramics under powerful flux of high-energy electrons

Author

D. A. Mussakhanov, L.A. Lisitsyna, A. V. Ermolaev, M. G. Golkovski, and V. M. Lisitsyn

Subjects
High energy, Materials science, visual_art, visual_art.visual_art_medium, Ceramic, Electron, Atomic physics, Geotechnical Engineering and Engineering Geology, Flux (metabolism)
Abstract

It is shown that a synthesis of MgF2 and YAG: Ce ceramics is realized with a high rate from a charge of a low bulk density in the field of powerful electron flux with an electron energy of 1.4 MeV. The high efficiency of the synthesis is due to the formation under powerful radiation flux of radiolysis products which stimulate solid-phase and gas-phase reactions in the charge.

Published
2020
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4. Biocompatible Ti-Nb alloys produced via relativistic electron beam in air atmosphere

Author

A. M. Mairambekova, Margarita A. Khimich, I. A. Glukhov, M. G. Golkovski, and Yu. P. Sharkeev

Subjects
Atmosphere, Condensed Matter::Materials Science, Materials science, Phase (matter), Powder metallurgy, Air atmosphere, Cathode ray, Relativistic electron beam, Substrate (electronics), Composite material, Energy source
Abstract

In present paper Ti-Nb alloys produced via high-energy powder metallurgy method were studied. Ti-Nb alloys were obtained in form of layers on Ti substrate. The energy source was an electron beam emitted to the atmosphere, penetrating into deep layers of the powder. Electron energy was 1.4 MeV. It is shown that it is possible to produce alloys with predictable elemental and phase compositions via relativistic electron beam. Depending on the content of Nb, such phases as α′, α″ or β are formed. Produced alloys are non-toxic for cells. Due to this, manufacturing of small medical implants from this material is possible.

Published
2019
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5. LUMINESCENCE OF CERIUM DOPED YTTRIUM ALUMINUM GARNET CERAMICS SYNTHESIZED IN THE FIELD OF RADIATION FLUX.

Author

G. K., Alpyssova, V. M., Lisitsyn, Zh. T., Karipbayev, and M. G., Golkovski

Subjects
LUMINESCENCE, CERIUM, YTTRIUM, RADIATION, ALUMINUM oxide
Abstract

The paper presents the results of ceramic samples' dependence of luminescent properties on their position in the crucible during irradiation. For the synthesis, a blend of powders of aluminum oxide, yttrium oxide and cerium oxide was prepared. The ratio of oxides in the charge corresponded to stoichiometric. The particles of the oxide powders had a size of about 1 micron and less. Synthesis was carried out on gas pedal electron accelerator at Institute of Nuclear Physics SB RAS (Novosibirsk). Luminescent properties were measured on spectrofluorimeter SM 2203 "SOLAR" under excitation by monochromatic radiation at 450 nm. Two types of samples differing in the value of bulk density and the prehistory of yttrium oxide were investigated. [ABSTRACT FROM AUTHOR]

Published
2021
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6. Producing titanium-niobium alloy by high energy beam

Author

I. A. Glukhov, M. G. Golkovski, S. V. Fortuna, V. A. Bataev, Yu.P. Sharkeev, and A. Yu. Eroshenko

Subjects
Cladding (metalworking), Surface coating, Materials science, chemistry, Martensite, Metallurgy, Niobium, Titanium alloy, chemistry.chemical_element, Indentation hardness, Concentration ratio, Titanium
Abstract

The research is involved in producing a Ti-Nb alloy surface layer on titanium substrate by high energy beam method, as well as in examining their structures and mechanical properties. Applying electron-beam cladding it was possible to produce a Ti-Nb alloy surface layer of several millimeters, where the niobium concentration was up to 40% at. and the structure itself could be related to martensite quenching structure. At the same time, a significant microhardness increase of 3200-3400 MPa was observed, which, in its turn, is connected with the formation of martensite structure. Cladding material of Ti-Nb composition could be the source in producing alloys of homogeneous microhardness and desired concentration of alloying niobium element.

Published
2016
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