Results 1 to 10 of about 69,230 (180)

About the crystallization centers of metal melts

Литьë и металлургия
It is shown that the main modifying intermetallides of primary microcrystals of aluminum alloys do not satisfy the principle of structural and dimensional correspondence.
E. I. Marukovich, V. Yu. Stetsenko, A. V. Stetsenko   +2 more
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Molecular spin sensor for in-situ monitoring of crystallization behavior and phase transition in aromatic materials [PDF]

Nature Communications
Spin-active materials with sensitive electron spin centers have drawn significant attention in quantum sensing due to their unique quantum characteristics. Herein, we report a molecular spin sensor based on metallofullerene Y2@C79N for in-situ monitoring
Linshan Liu, Chong Zhao, Yingjian Zhang, Zhuxia Zhang, Chunru Wang, Taishan Wang   +5 more
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Influence of modification of the cast metal structure by solid phase particles on the nucleation of crystallization centers and their stability [PDF]

Қарағанды университетінің хабаршысы. Физика сериясы, 2022
The inoculation method has wide possibilities for improving the mechanical and operational properties of cast metal, which makes it possible to create artificial centers of crystallization due to the direct introduction of dispersed refractory particles
Е.Н. Еремин
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Nanomodification is an effective methodfor forming the structure of the weld metal. Part II. [PDF]

Нанотехнологии в строительстве, 2020
The short-term existence of the melt in the weld pool and its overheating, a large temperature gradient near the interface and two-dimensional crystallization centers, in the form of fused grains at the weld pool boundary, reduce the probability and rate
Sizintsev Sergey Valerievich, Sannikov Vladimir Gennadievich,, Pershin Vladimir Fedorovich, Boldyrev Alexander Mikhailovich   +3 more
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Formation of sucrose crystallization centers and their growth in a vacuum apparatus

BIO Web of Conferences, 2021
The article considers sucrose crystallization as a mass transfer process, which is a phase transition from a liquid phase to a solid phase, and includes two main stages: the formation of crystallization centers and the growth of crystals to the desired ...
Slavyanskiy Anatoliy, Lebedeva Natalia, Voitsekhovsky Vladimir   +2 more
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Luminescence at the axial centers of CdP2-D48 crystals [PDF]

Heliyon, 2018
Emission lines of free excitons and excitons bound to axial centers have been observed in the luminescence spectra of CdP2-D4 8 crystals doped with Mn, Sn, and Sb at 10 K. Bands models of excitons bound to axial centers (Mn, Sn, Sb) are proposed. The luminescence of crystals doped with Fe does not correspond to the axial centers band scheme.
S.I. Beril, V.V. Panasenco, D.V. Tkachenko, I.G. Stamov, N.N. Syrbu   +4 more
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Dispersion of the F+2 center in KCl crystal [PDF]

Solid State Communications, 1985
Abstract The dispersion due to F+2 center in KCl crystal is determined at liquid helium temperature through an ellipsometric technique using their polarization properties in the spectral region of the ls g→2p u transition. The maximum index change expressed as a function of the peak-to-peak dichroic absorption constant αd(cm−1) is given by (n ...
Donatti, D. A., Aegerter, Michel A.
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Influence Intensive Plastic Deformation on Phase Formation Process in Amorphous Alloys [PDF]

Журнал нано- та електронної фізики, 2016
The influence of intensive plastic deformation on structure and properties of amorphous alloys were investigated experimentally. Using highly sensitive dilatometer techniques shown that intensive plastic deformation of amorphous alloys leads to increased
V.I. Lysov, T.L. Tsaregradskaya, O.V. Turkov, G.V. Saenko   +3 more
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Crystallization behavior and morphological features of ethylene-vinyl alcohol 44 copolymer

eXPRESS Polymer Letters, 2022
This work is a first attempt to study the crystallization behavior of ethylene-vinyl alcohol copolymer with 44 mol% of ethylene units (EVOH44) and to observe the supermolecular structures developed during its crystallization.
Clement Freymond, Alain Guinault, Matthieu Gervais, Miroslaw Pluta, Tomasz Makowski, Ewa Piorkowska, Cyrille Sollogoub   +6 more
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Crystallization of the Reaction Center of Photosystem II [PDF]

Acta Crystallographica Section A Foundations of Crystallography, 1996
The reaction center of Photosystem II (RCII) is the large multi-subunit membrane protein-pigment complex which the site of the primary photochemical reactions of oxygenic photosynthesis. These reactions include charge separation, sequential electron transfer and oxygen evolution (1,2).
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