Melting temperature of In particles embedded in an Al matrix

Saka, Hiroyasu; Nishikawa, Yoshitaka; Imura, Toru

doi:10.1080/01418618808204524

Cited by 176 publications

(88 citation statements)

References 15 publications

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“…One of the most pronounced manifestations of change of thermodynamic properties observed in nanosized crystalline systems is the effect of reduction of the melting temperature of free nanocrystals [1][2][3][4][5][6][7][8][9]. So the principal problem of statistical description of thermodynamics of nanocrystals is elucidation of the mechanism of size effect on statistical characteristics of atoms in such systems.…”

Section: Discussionmentioning

confidence: 99%

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Melting and thermodynamic properties of rare gas nanocrystals

Karasevskii

Lubashenko

2009

Low Temperature Physics

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A self-consistent statistical method [Phys. Rev. B66, 054302 (2002)] is used to describe thermodynamic properties of free rare gas nanocrystals using thin plates as examples. It is shown that size influence on thermodynamic properties of nanocrystals is caused by size-dependent quantization of the vibration spectrum affecting the parameters of a statistical distribution function of atomic displacements and, thus, governing size dependence of average values of energetic contributions to the Gibbs free energy of the system. For Xe nanocrystals, we present calculated size dependences of the Debye temperature, heat capacity, interatomic distance, melting temperature, etc. PACS: 64.70.D-Solid-liquid transitions;65.80.+n Thermal properties of small particles, nanocrystals, and nanotubes.

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Section: Discussionmentioning

confidence: 99%

“…It should be noted that depression of the melting point is observed only in free nanocrystals. If a nanoparticle is embedded into some medium, it may be considerably superheated [8,9].…”

Section: Introductionmentioning

confidence: 99%

Melting and thermodynamic properties of rare gas nanocrystals

Karasevskii

Lubashenko

2009

Low Temperature Physics

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“…Melting/solidification of particles and inclusions have particularly experienced considerable attention, e.g. [5][6][7][8][9][10][11][12][13][14]. Nevertheless, in-situ TEM studies of solidstate structural phase transformations in particles and inclusions have received only little systematic attention, an exception of which is the study of the transition from tetragonal to monoclinic ZrO 2 for small inclusions [15][16][17][18][19][20] motivated by technological applications [21][22][23][24] and the α to β transition in quartz [25,26,25,26].…”

Section: Introductionmentioning

confidence: 99%

In-situ TEM analysis of the reduction of nanometre-sized Mn3O4 precipitates in a metal matrix

Kooi

Hosson

2001

Acta Materialia

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In-situ TEM analysis of the reduction of nanometre-sized Mn3O4 precipitates in a metal matrix Kooi, B.J.; de Hosson, J.T.M. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Abstract-The objective of the present work is the in-situ study of the transformation of small oxide precipitates in a metal matrix by conventional and high-resolution transmission electron microscopy (HRTEM). As an example the reduction of Mn 3 O 4 into MnO for nano-sized oxide precipitates in a silver matrix was studied in detail. A convenient method for monitoring the reduction process is shown for a large number of precipitates simultaneously. It is based on two-beam dark-field images showing distinct Moiré patterns for the MnO and the various types of Mn 3 O 4 precipitates embedded within an Ag matrix. A controlling factor of the transformation kinetics appeared to be the rate in which the system can relax the strains due to the accompanying volume reduction of the precipitates. Other interesting aspects of the Mn 3 O 4 to MnO transformation scrutinized and explained were the shape change of the precipitates upon reduction and the fact that mixed Mn 3 O 4 /MnO precipitates were only detected within a small temperature/time interval. Ostwald ripening of the MnO precipitates was observed as well.

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“…In-situ observation of melting and solidification processes of metallic films has been made by the use of a transmission electron microscope (TEM) in order to study grain boundary melting [1][2][3][4], microscopic morphology of a solid-liquid interface [5][6][7][8][9], melting transition [10,11], nucleation behavior of melting or solidification [6,[12][13][14][15][16] and behavior of dislocations in melting [17]. However, it can be pointed out that information on behavior of melt growth is lacking, while the melt growth has been observed by X-ray topography on crystals of Sn [18] and Al [19][20][21][22].…”

Section: Physics Abstractsmentioning

confidence: 99%

Observation of Melt Growth Process of Bi and Sn Thin Films

Sugawara

Watanabé

1993

Microsc. Microanal. Microstruct.

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Abstract. 2014 We observed melt-growth process of Bi and Sn thin films by in-situ transmission electron microscopy. After preparing the films with some specified orientations from bulk single crystals of Bi (99.9 and 99.9999 %) and Sn (99.999 %), we partially melted and regrew them by cooling at a nearly constant rate in an electron microscope. In the Bi films, a growing solid-liquid interface was observed to be concave toward melt more frequently than faceted. The movement of the curved interface was sensitive to small fluctuations of the falling temperature, while the faceted interface was insensitive. During the melt growth various crystal defects were introduced, and their density depends on the orientation, purity of films and the cooling condition. In the Sn films, a growing interface was always curved. The defects formed were confined to lineage defects, of which formation was not influenced by the cooling rate but by the film orientation.

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Melting temperature of In particles embedded in an Al matrix

Cited by 176 publications

References 15 publications

Melting and thermodynamic properties of rare gas nanocrystals

Melting and thermodynamic properties of rare gas nanocrystals

In-situ TEM analysis of the reduction of nanometre-sized Mn3O4 precipitates in a metal matrix

Observation of Melt Growth Process of Bi and Sn Thin Films

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