About: Stress Development During Reaction of Metallic Nanospheres with Gas

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Description	The formation of stoichiometric MpXq hollow nanospheres by reaction of metallic M nanospheres with the gaseous X phase must be preceded by the formation of a sufficiently thickMpXq nanoshell on the metallic core of phase M. During this stage, high supersaturation of vacancies in the M core and/or hydrostatic stress in the M core, due to the misfit between the core and the nanoshell, are developed and provide favourable conditions for the hollow nucleation. The misfit is caused by the Kirkendall effect. Based on the application of the thermodynamic extremal principle, a kinetic model of MpXq nanoshell formation is derived. The kinetics is driven by the change of the chemical energy due to reaction of the M and X components, the interface and surface energies, and the elastic strain energy due to misfit strain of the whole system. The model is used for simulation of the Cu2O shell growth kinetics due to oxidation of a Cu nanosphere, and the results of the simulations are discussed. The formation of stoichiometric MpXq hollow nanospheres by reaction of metallic M nanospheres with the gaseous X phase must be preceded by the formation of a sufficiently thickMpXq nanoshell on the metallic core of phase M. During this stage, high supersaturation of vacancies in the M core and/or hydrostatic stress in the M core, due to the misfit between the core and the nanoshell, are developed and provide favourable conditions for the hollow nucleation. The misfit is caused by the Kirkendall effect. Based on the application of the thermodynamic extremal principle, a kinetic model of MpXq nanoshell formation is derived. The kinetics is driven by the change of the chemical energy due to reaction of the M and X components, the interface and surface energies, and the elastic strain energy due to misfit strain of the whole system. The model is used for simulation of the Cu2O shell growth kinetics due to oxidation of a Cu nanosphere, and the results of the simulations are discussed. (en)
Title	Stress Development During Reaction of Metallic Nanospheres with Gas Stress Development During Reaction of Metallic Nanospheres with Gas (en)
skos:prefLabel	Stress Development During Reaction of Metallic Nanospheres with Gas Stress Development During Reaction of Metallic Nanospheres with Gas (en)
skos:notation	RIV/68081723:_____/11:00363673!RIV12-AV0-68081723
http://linked.open...avai/predkladatel	Ústav fyziky materiálů AVČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP108/10/1781), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Svoboda, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	232620
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/11:00363673
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Bulk diffusion; Phase transformation kinetics; Oxidation (en)
http://linked.open.../riv/klicoveSlovo	Bulk diffusion Phase transformation kinetics Oxidation
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[BE127FAB86B8]
http://linked.open...i/riv/nazevZdroje	Acta Materialia
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	The role of the stress state and vacancy supersaturation in formation of binary-phase hollow nanospheres
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	59
http://linked.open...iv/tvurceVysledku	Fischer, F. D. Svoboda, Jiří
http://linked.open...ain/vavai/riv/wos	000284789200007
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	1359-6454
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.actamat.2010.09.001
is http://linked.open...avai/riv/vysledek of	Stress Development During Reaction of Metallic Nanospheres with Gas Stress Development During Reaction of Metallic Nanospheres with Gas

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