Evolution of Pores in Nanoshells — a Competition of Direct and Inverse Kirkendall Effects, Frenkel and Gibbs–Thomson Effects: the Phenomenological Description and Computer Simulation

Запорожець, Т. В.; Гусак, А. М.; Podolyan, O. M.

doi:10.15407/ufm.13.01.001

Cited by 9 publications

(12 citation statements)

References 44 publications

(87 reference statements)

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“…Ultimately, the equation system (20) can be rewritten in dimensionless form: 21). On the left: phase portrait for trajectories of "small" pores, obtained at initial conditions r| t=0 = 1, r s | t=0 = 100, A = 10 −1 and B = 0.25; on the right: phase portrait for trajectories of "large" pores, obtained at initial conditions r| t=0 = 1, r s | t=0 = 1.5, A = 10 −1 and B = 0.25…”

Section: Evolution Equations Of Gas-filled Porementioning

confidence: 99%

“…It is worse to note, that pore formation in spherical nanoshells was discovered relatively recently [8]. In the review [20] the results are presented of theoretical and numerical investigations related to formation and disappearing of pores in spherical and cylindrical nanoparticles. Great attention in [20] is paid to the problem of hole nanoshell stability, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…In the review [20] the results are presented of theoretical and numerical investigations related to formation and disappearing of pores in spherical and cylindrical nanoparticles. Great attention in [20] is paid to the problem of hole nanoshell stability, i.e. to the case when in the nanoparticle center large vacy pores are situated.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of vacancy pores in bounded particles

Yanovsky¹

2019

Funct.Mater.

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In the present work, evolution of gas-filled pore inside spherical nanoshells is considered. On the supposition that diffusion fluxes are quasistationary, the nonlinear equation system is obtained analytically, that describes completely the behaviour of gas-filled pore and matrix shell. Two limiting cases are considered: the case when the pore is small as compared to the matrix shell and the case of the pore close to the matrix shell boundary. The characteristic regularities of pore behaviour are established.

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Section: Evolution Equations Of Gas-filled Porementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evolution of vacancy pores in bounded particles

Yanovsky¹

2019

Funct.Mater.

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“…It is worse to note, that pore formation in spherical nanoshells was discovered relatively recently [10]. In the review [17] the results are presented of theoretical and numerical investigations related to formation and disappearing of pores in spherical and cylindrical nanoparticles. Great attention in [17] is paid to the problem of hole nanoshell stability, i.e.…”

Section: Introductionmentioning

confidence: 99%

Gas-filled pore in bounded particle

Yanovsky¹,

Kopp²,

Ratner³

2019

Preprint

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The diffusive evolution has been studied of gas-filled pore has in a bounded particle in gas media. The nonlinear equation set, describing the behaviour of gas-filled pore on bounded particle is obtained. Asymptotic modes are considered for evolution of small and large pores. Analytical solutions are obtained in asymptotic modes. The comparison is conducted of these solutions with results of numerical solution of complete equation set. The characteristic regularities of gas-filled pore behavior are found at arbitrary pore position relative to matrix particle center.

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“…ZrTi alloys, which are characterized by nanocomposite particles formation, were investigated giving the evidence about the increase of strength, fatigue properties and creep resistance [16].…”

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confidence: 99%

Composite Particles Formation and Behaviour in Al-Li Alloys Alloyed by Sc (Zr) under Heat Treatment and Severe Plastic Deformation

2015

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The mechanism and kinetics of Al3Li/Al3Sc composite particles formation during aging of triple AlLiSc alloys were studied. The particles of such type consist of two isomorphic phases, ordered by L12 type. Composite particles in AlLiSc are formed by epitaxial nucleation of δ (Al3Li) phase on pre-existing Al3Sc precipitates at low temperature aging in the area of existence of Al3Li phase, and form uniform shell around them. The motive force of such heterostructure formation is the minimization of total surface, elastic and chemical energy of the alloy. Dark-eld transmission electron microscopy images of such composite particles taken from superlattice reex 100 are composed of a dark core surrounded by a bright shell. The mutual diusion of Li and Sc during the aging of AlLiSc alloys is observed. The dark-eld transmission electron microscopy image of the composite particle obtained from superlattice reection became transparent after continuous natural aging of AlLiSc alloys. The presence of the particle in Al matrix can be only seen due to decoration by secondary precipitations of δ (Al3Li) phase. Composition analysis of such transparent particles was carried out using two-beam kinematical theory of electron diraction. Such composite particles with transparent cores remain in Al matrix even after severe plastic deformation of AlLiSc alloy.

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Evolution of Pores in Nanoshells — a Competition of Direct and Inverse Kirkendall Effects, Frenkel and Gibbs–Thomson Effects: the Phenomenological Description and Computer Simulation

Cited by 9 publications

References 44 publications

Evolution of vacancy pores in bounded particles

Evolution of vacancy pores in bounded particles

Gas-filled pore in bounded particle

Composite Particles Formation and Behaviour in Al-Li Alloys Alloyed by Sc (Zr) under Heat Treatment and Severe Plastic Deformation

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