Nonstationary nucleation (explosive crystallization) in layers of amorphous ice prepared by low-temperature condensation of supersonic molecular beams / Faizullin M. Z.,Vinogradov A. V.,Tomin A. S.,Koverda V. P. // INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER. - 2017. - V. 108, l. B. - P. 1292-1296.

ISSN/EISSN:

0017-9310 / 1879-2189

Type:

Article

Abstract:

Layers of amorphous ice were prepared by deposition of supersonic molecular beams of rarefied vapor on a substrate cooled by liquid nitrogen. Molecular beam entered a vacuum chamber through Laval nozzle, which accelerated it to a supersonic speed. An adiabatic expansion of molecular beam leads to a decrease in the temperature at the nozzle outlet and formation of crystalline nanoclusters of water. Under heating of nonequilibrium condensates one could observe a glass transition (softening) and subsequent spontaneous crystallization. The presence of water clusters introduced into nonequilibrium condensates artificially ensured conditions for the initiation of ``hot{''} centers and a transition to an explosive regime of crystallization in an amorphous medium. A theoretical analysis has been made of the role of the thermal conditions in which the crystallization of an amorphous substance proceeds, with allowance for the non stationary nucleation. (C) 2016 Elsevier Ltd. All rights reserved.

Author keywords:

Supercooled water; Condensation; Metastable state; Nucleation SOLID WATER; GLASSY WATER; AQUEOUS-SOLUTIONS; TRANSITION; LIQUID; STATES

DOI:

10.1016/j.ijheatmasstransfer.2

Web of Science ID:

ISI:000399357700004

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAY
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
EISSN	1879-2189
Keywords-Plus	SOLID WATER; GLASSY WATER; AQUEOUS-SOLUTIONS; TRANSITION; LIQUID; STATES
Research-Areas	Thermodynamics; Engineering; Mechanics
Web-of-Science-Categories	Thermodynamics; Engineering, Mechanical; Mechanics
Author-Email	faizullin@itp.uran.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}15-08-02734-a]; Program for Basic Research of the Ural Branch of the RAS {[}15-1-2-7]
Funding-Text	The work was supported by the Russian Foundation for Basic Research (Grant No. 15-08-02734-a) and the Program for Basic Research of the Ural Branch of the RAS (Grant No. 15-1-2-7).
Number-of-Cited-References	21
Usage-Count-Last-180-days	8
Usage-Count-Since-2013	8
Journal-ISO	Int. J. Heat Mass Transf.
Doc-Delivery-Number	ES2KP