Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Vladimir S. Tsepelev"'
Publikováno v:
Materials, Vol 17, Iss 10, p 2215 (2024)
The phenomenon of spontaneous dispersion is considered as the cause of the microstratification of metal melts. In a microstratification melt, a violation of long-range order in the arrangement of atoms (LRO) is observed, which corresponds to a disper
Externí odkaz:
https://doaj.org/article/d88da8482533425683b5e6612bf4a481
Publikováno v:
Materials, Vol 17, Iss 2, p 474 (2024)
Melting, solidification, and viscosity properties of multicomponent Fe-Cu-Nb-Mo-Si-B alloys with low aluminum addition (up to 0.42 at.% Al) were studied using an oscillating cup viscometer. It is shown that melting and solidification are divided into
Externí odkaz:
https://doaj.org/article/bc8d36282fde4bdf9d5d7a6d1be84afc
Publikováno v:
Metals, Vol 13, Iss 12, p 1954 (2023)
The temperature dependences of the kinematic viscosity during heating and cooling have been investigated in Co-B melts with a boron content of up to 30.8 at. A liquid–liquid structural transition was found, which is accompanied by an increase in th
Externí odkaz:
https://doaj.org/article/f7ee5d0a073d4c0094f6c29a2701caa1
Publikováno v:
Materials, Vol 16, Iss 10, p 3801 (2023)
The relationship between the volumetric thermodynamic coefficients of liquid metals at the melting point and interatomic bond energy was studied. Using dimensional analysis, we obtained equations that connect cohesive energy with thermodynamic coeffi
Externí odkaz:
https://doaj.org/article/dc407b492c0b45e6a456eed23e3330aa
Publikováno v:
Materials, Vol 15, Iss 3, p 1217 (2022)
The influence of the geometric dimensions of the cut core and the number and size of air gaps on the effective permeability was investigated. Using dimensional analysis, an equation was obtained that relates the permeability of the cut core to the si
Externí odkaz:
https://doaj.org/article/12d56cf1783245d1b623333bf96c1f5b
Autor:
Dmytro S. Kozak, Maria Tonti, Patricia Cuba, Julian Espitia, Vladimir S. Tsepelev, Davy Verheyen, Simen Akkermans, Jan F. M. Van Impe
Publikováno v:
Applied Sciences, Vol 11, Iss 23, p 11117 (2021)
A lab-scale low-power free-running radio frequency (RF) oscillator operating at a frequency of 27.12 ± 0.50 MHz was developed to be suitable for fundamental microbiological research topics. Calibration and validation were conducted for two common fo
Externí odkaz:
https://doaj.org/article/726a162897074d63a8de49181f9aff1e
Publikováno v:
Metals, Vol 11, Iss 11, p 1724 (2021)
In this work, we investigated the temperature dependence of the kinematic viscosity of multicomponent Fe72.5−xNixCu1Nb2Mo1.5Si14B9 melts with a Ni content of up to 12.7 at. %. The peculiarities of the temperature dependence of Ni-containing melts w
Externí odkaz:
https://doaj.org/article/bc29e08d885a46788babe9361b7703f1
Publikováno v:
Metals, Vol 11, Iss 7, p 1099 (2021)
The temperature dependences of the kinematic viscosity and surface tension of liquid pipe steel with different modes of melt preparation were investigated. A transition zone was found on the temperature dependences of the thermophysical properties, w
Externí odkaz:
https://doaj.org/article/8c0e007281d244b7b54ea322dab7c5e9
Autor:
Dmytro S. Kozak, Vladimir S. Tsepelev, Viktor V. Konaskov, Viktor V. Vyukhin, Vladislav Y. Zadorozhnyy, Andrey I. Bazlov, Askar R. Kvaratskheliya, Andrey A. Tsarkov, Jan F. M. Van Impe
Publikováno v:
Metals, Vol 11, Iss 5, p 823 (2021)
In this work, the physical properties of Fe48Cr15Mo14C15B6Y2 alloy in liquid state at high temperature are studied. It was observed that the basic physical characteristics of the alloy, such as viscosity, electrical resistivity, and density, decrease
Externí odkaz:
https://doaj.org/article/d5de3bccb5334a1b9306f2424181c410
Publikováno v:
Nanomaterials, Vol 11, Iss 4, p 1042 (2021)
The work investigated the temperature dependences of the kinematic viscosity for multicomponent melts of nanocrystalline soft magnetic alloys. It is shown that there is a linear relationship between the reduced activation energy of viscous flow Ea·(
Externí odkaz:
https://doaj.org/article/bfac1d011ebd44fcad6f576b9d7a75cf