Results 11 to 20 of about 70,723 (326)

Modeling fractal crystals forming on the surface of stainless steel by cellular automata [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2018
In this paper experiments on crystallization from melts and results of analysis of the morphology of formed crystal structures are discussed. Some examples of forming complex dendritic formations are shown. Different types of the crystal morphology arise
A.A. Burtsev, O.Ya. Butkovskii
doaj   +2 more sources

Crystallization-Enabled Henry Reactions: Stereoconvergent Construction of Fully Substituted [N]-Asymmetric Centers.

open access: yesJournal of the American Chemical Society, 2022
Tetrasubstituted stereogenic carbon centers bearing a nitrogen substituent represent important motifs in medicinal chemistry and natural products; therefore, the development of efficient methods for the stereoselective synthesis of this class of ...
Pedro de Jesús Cruz, Jeffrey S. Johnson
semanticscholar   +1 more source

Crystal nucleation in adroplet based microfluidic crystallizer [PDF]

open access: yes, 2012
The study presented in this paper deals with the determination of eflucimibe nucleation rate in a droplet based microfluidic crystallizer. The experimental device allows the storage of up to 2000 monodispersed droplets to get nucleation statistics and ...
Biscans, Béatrice, Teychene, Sébastien
core   +1 more source

Nanostructural crystallization of metals

open access: yesЛитьë и металлургия, 2021
Based on thermodynamic calculations, it is shown that metal crystallization is an equilibrium nanostructural process. At the beginning, trigonal or tetragonal structure-forming nanocrystals are formed from elementary nanocrystals.
E. I. Marukovich   +2 more
doaj   +1 more source

ALUMINIUM BRONZE. NANOSTRUCTURAL PROCESSES OF MELTING AND MOULDING

open access: yesЛитьë и металлургия, 2018
It is shown that melting and molding of aluminum bronze are difficult physical and chemical processes. In them the major role is played by the centers of crystallization of dendrites of a a-phase, the a-phase nanocrystals dissolved and the adsorbed ...
E. I. Marukovich, V. Yu. Stetsenko
doaj   +1 more source

Explosive crystallization mechanism of ultradisperse amorphous films [PDF]

open access: yes, 1999
The explosive crystallization of germanium ultradisperse amorphous films is studied experimentally. We show that crystallization may be initiated by local heating at the small film thickness but it realizes spontaneously at the large ones.
A.I Olemskoi   +12 more
core   +3 more sources

Self-catalytic growth of one-dimensional materials within dislocations in gold

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2021
Significance Dislocation edges on metal surfaces provide loosely bonded atoms, which make the surface more active for chemical corrosion and enhance the chemical reactivity.
Lotan Portal   +4 more
semanticscholar   +1 more source

Surface Crystallization of Aqueous Salt Solution Under Overheating and Overcooling

open access: yesMATEC Web of Conferences, 2016
The investigation of the surface crystallization with low negative and high positive temperatures were carried in the paper. Crystallization curves for distillate (Ts0 = −9 °C) and different mass salt concentrations NaCl (Ts0 = 80 °C) were obtained ...
Nakoryakov Vladimir   +2 more
doaj   +1 more source

Crystallization features of casting alloys

open access: yesЛитьë и металлургия, 2023
It has been shown that elementary crystal lattices of basic phases and oxides of casting alloys do not satisfy the principle of structural and dimensional correspondence.
E. I. Marukovich   +2 more
doaj   +1 more source

NANOSTRUCTURAL PROCESSES OF MELTING AND CASTING OF CAST IRON WITH FLAKY GRAPHITE

open access: yesЛитьë и металлургия, 2017
It is shown that melting and casting of cast iron with flaky graphite are the complex physical and chemical nanostructural processes. The majorrole in these processis played by the centers of crystallization of dendrites of graphite, graphite ...
E. I. Marukovich, V. Yu. Stetsenko
doaj   +1 more source

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