Перегляд за автором "Pylypenko, M.M."

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Air-thermal oxidation of zirconium materials

Pylypenko, M.M.; Drobyshevskaya, A.A.; Stadnik, Yu.S.; Tantsyura, I.G. (Вопросы атомной науки и техники, 2014)

The results of the temperature effect on the process of oxide films formation on the surface of the zirconium materials are given. The changes of the morphology, structure and properties of the oxide films on the zirconium ...
Alloys for molten-salt reactors

Azhazha, V.M.; Bakai, A.S.; Lavrinenko, S.D.; Bobrov, Yu.P.; V’yugov, P.N.; Kovtun, K.V.; Pylypenko, M.M.; Savchenko, V.I.; Solopikhin, A.D.; Stetsenko, S.P.; Malykhin, D.G. (Вопросы атомной науки и техники, 2005)

Results are reported from studies on the selection, development and manufacture of structural materials for a fuel-salt circulation loop of molten-salt reactors. Studies into the properties of materials obtained were ...
Application in a linear proton accelerator of a non-vaporizable Zr(86)-Al(14) getter located inside the chamber of a plasma-ion proton injector for its additional pumping

Aksonova, A.M.; Belicov, V.V.; Vdovin, S.A.; Makhnenko, P.L.; Pylypenko, M.M.; Podolyak, A.P.; Ponomarchuk, E.I.; Svynarenko, O.P.; Skibin, V.I. (Вопросы атомной науки и техники, 2022)

The rates of pumping hydrogen and nitrogen by the non-evaporable Zr(86)-Al(14) getter located inside the chamber of a plasma-ion proton injector are investigated. The measurements at the temperature range 473…1300 K and ...
Computer simulation of thermal and hydraulic processes in NPP steam generator channels on the basis of interval-iterative method

Yefimov, O.V.; Pylypenko, M.M.; Potanina, T.V.; Kavertsev, V.L.; Harkusha, T.A.; Yesypenko, T.O. (Вопросы атомной науки и техники, 2022)

The designing of NPP steam generators, which are complex technical systems, requires a large number of variant calculations, as result of which must be obtained both optimal integral characteristics of steam generators ...
Concomitant extraction process of niobium at the titanium tetrachloride production

Sarsembekov, Т.К.; Yanko, Т.B.; Sidorenko, S.A.; Pylypenko, M.M. (Вопросы атомной науки и техники, 2020)

Development of the fundamentals of a technology for producing niobium by the concomitant extraction in the process of production of titanium tetrachloride from titanium raw materials. The paper provides data on the amount ...
Effect of hydrogenation on creep and structure evolution of nanocrystalline Zr1Nb alloy

Savchuk, E.S.; Sokolenko, V.I.; Karaseva, E.V.; Mats, A.V.; Frolov, V.A.; Pylypenko, M.M. (Problems of Atomic Science and Technology, 2023)

The regularities of creep, mechanical characteristics, and structure evolution of Zr1Nb nanocrystalline alloy obtained by intensive plastic deformation and hydrogenated from a gaseous medium are studied. It is shown that, ...
Effect of iron additives on the properties of Zr1%Nb alloy

Pylypenko, M.M.; Drobyshevskaya, A.A.; Stadnik, Yu.S.; Tantsyura, I.G.; Pylypenko Jr., M.M. (Вопросы атомной науки и техники, 2018)

The effect of iron additives on the microstructure and properties of Zr1%Nb alloy were investigated. The Zr1%Nb alloy with microadditives of iron was obtained by vacuum-arc melting method. Microhardness of experimental ...
Effect of iron on evolution of the structure of alloy Zr-1%Nb under ion irradiation

Pylypenko, M.M.; Vasilenko, R.L.; Drobyshevska, A.O. (Вопросы атомной науки и техники, 2022)

This paper presents experimental data of the study of the influence of Fe alloying on the changes of the structure of the Zr-1%Nb alloy and evolution of the structure of this alloy under ion irradiation. It is shown that ...
Estimation of the dependence parameters of nuclear structural materials hardness on the content of gas impurities: an interval approach

Potanina, Т.V.; Yefimov, O.V.; Pylypenko, M.M. (Вопросы атомной науки и техники, 2021)

The applications of the interval and standard probabilistic approaches for verifying the reliability of the results of an experiment studying the mechanical properties of nuclear materials are compared. The presence of ...
High pure zirconium

Pylypenko, M.M. (Вопросы атомной науки и техники, 2017)

The results of investigations of zirconium refining processes by methods of electron-beam melting and zone recrystallization using high-vacuum technology are presented. It is shown that the applied methods of zirconium ...
High pure zirconium

Pylypenko, M.M. (Вопросы атомной науки и техники, 2018)

The results of investigations of zirconium refining processes by methods of electron-beam melting and zone recrystallization using high-vacuum technology are presented. It is shown that the applied methods of zirconium ...
Influence of iron additives on the corrosion resistance of the Zr-1%Nb alloy under operating conditions of a nuclear reactor

Pylypenko, M.M.; Drobyshevska, A.O.; Zuyok, V.A. (Вопросы атомной науки и техники, 2022)

This paper presents experimental data of the study of the influence of iron microadditives on the evolution of the structure of the Zr-1%Nb alloy and its corrosion properties with increasing iron content. It is shown that ...
Interaction of tantalum with gases

Pylypenko, M.M.; Drobyshevskaya, A.A. (Физическая инженерия поверхности, 2014)

Kinetics of tantalum degassing by vacuum extraction of gases of heated metal in temperature range 1675—2275 K is studied. Main component of the gases that separated from metal is nitrogen. The dependence for determination ...
Mathematical relationships of models of two-phase flows in channels of reactors and steam generators of NPP's for the calculation of their hydrodynamic characteristics

Yefimov, О.V.; Pylypenko, M.M.; Kavertsev, V.L.; Harkusha, T.A.; Yesypenko, T.O. (Вопросы атомной науки и техники, 2022)

Two-phase flows of the working substance in the steam-generating channels of reactors of single-circuit NPP’s and steam generators of two- and three-circuit NPP’s represent the joint movement of liquid (feed water) and ...
Mathematical relations of models of single-phase flows in the channels of reactors and steam generators of NPP's for calculation of heat transfer processes and hydrodynamic characteristics

Yefimov, O.V.; Pylypenko, M.M.; Kavertsev, V.L.; Harkusha, T.A.; Tiutiunyk, L.J.; Motovilnik, A.V. (Вопросы атомной науки и техники, 2022)

The article presents the mathematical relationships of models of single-phase flows in channels of a other design for calculating the parameters of heat transfer processes and hydrodynamic (gas-dynamic) characteristics of ...
Mechanical and acoustic characteristics of oxidized, nitrided and oxynitrided Zr-1%Nb zirconium alloy

Trush, V.S.; Pylypenko, M.M.; Stoev, P.I.; Lavrys, S.M.; Kravchyshyn, T.M.; Luk’yanenko, O.H.; Tikhonovsky, M.A. (Вопросы атомной науки и техники, 2022)

The effect of the gaseous medium composition during thermo-chemical treatment (TCT) on the mechanical properties and acoustic parameters of Zr-1%Nb zirconium alloy was studied. It is shown that TCT in oxygen-nitrogen ...
Monocrystalline structure formation of doped perfect silicon crystals

Azarenkov, N.А.; Semenenko, V.Е.; Ovcharenko, А.I.; Pylypenko, M.M. (Вопросы атомной науки и техники, 2016)

In this paper we consider perfect doped silicon single crystals growth. Special features of anodic etching of n- and p-type single crystals has been revealed. An impact of seed orientation on dislocation and defect structure ...
Nuclear zirconium – the basis of alloys with improved neutron-physical, radiation, and corrosion properties

Mukhachev, A.P.; Pylypenko, M.M.; Kharуtonova, O.A. (Вопросы атомной науки и техники, 2020)

The paper provides a review of industrial technologies for the production of nuclear zirconium. Their advantages and disadvantages have been shown, a comparative analysis of the quality of zirconium and hafnium salts has ...
Processing of experimental data of the process of refining nuclear material Zr1%Nb by electron-beam melting by means of interval analysis methods

Yefimov, A.V.; Pylypenko, M.M.; Potanina, T.V.; Yesypenko, T.A.; Harkusha, T.A.; Stadnik, Yu.S. (Вопросы атомной науки и техники, 2019)

The possibilities of applying the methods and models of interval analysis, which take into account the uncertainties in the specification of data for Zr1%Nb alloys, to more accurately determine the relationship between the ...
Processing substandard materials of magnesium-thermal zirconium production

Pylypenko, M.M.; Yanko, T.B.; Stadnik, Yu.S.; Drobyshevska, A.O. (Вопросы атомной науки и техники, 2019)

This paper describes results of study processing of substandard materials and waste of magnesium-thermal production of spongy zirconium to determine the optimal methods of zirconium recycling. The optimal methods of ...

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