Characteristics of the sintering mechanism of compacts from ultrafine powders

Geguzin, Ya. E.; Makarovskii, N. A.; Богданов, В. В.

doi:10.1007/bf00794667

Cited by 15 publications

(15 citation statements)

References 4 publications

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“…Subsequent evaporation of the IPA molecules leads to the formation of the observed silver Crescent-shaped NMP. It is known [23], that this phenomenon is often observed in the study of the metastable heterogeneous colloidal systems as a result of the complex thermo-and masstranfer processes [24] and it is called "the syneresis".…”

Section: Silver Nano-/microstructures Deposited From Fogmentioning

confidence: 99%

Comparative Study of the Silver Nano-/Microstructures Deposited from Aerosol and Fog

Zheltova¹,

Maslyonkova²,

Biryukov³

et al. 2017

ANP

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A comparative study of the structure and fractal properties of arrays of the silver nano-/micro-particles deposited on the silicon substrate both from the aerosol and fog showed that the form of the silver individual particles and nano-/microstructures greatly depends on the deposition conditions. By passing an aerosol through isopropyl alcohol, the formation of fractal aggregates of the silver nano-/micro-particles both in the air and in alcohol was observed. Deposition of the silver nano-/micro-particles in the atmosphere of the saturated isopropyl alcohol vapours led to formation of fog. Microdroplets of the silver colloidal solution were deposited on the substrate. The further evaporation of alcohol created the silver nano/microstructures in the form of annular layers. It was found that the concerned annular layers contained silver particles of the same shape in the form of a Crescent (or Janus-nano-/microparticles). The nature of discovered effects is discussed.

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Section: Silver Nano-/microstructures Deposited From Fogmentioning

confidence: 99%

Comparative Study of the Silver Nano-/Microstructures Deposited from Aerosol and Fog

Zheltova¹,

Maslyonkova²,

Biryukov³

et al. 2017

ANP

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“…Analyzing the physical phenomena that occur during sintering in the powder body, it turns out that the evolution of the microstructure plays the main role (Geguzin, 1984;Skorokhod and Solonin, 1984;Kadushnikov and Beketov, 1989;Ross et al, 1982). The existing models of microstructural changes can be reduced to two main types, which are based on pair-interactions and on the evolution of the topological structure.…”

Section: Introductionmentioning

confidence: 99%

“…The existing models of microstructural changes can be reduced to two main types, which are based on pair-interactions and on the evolution of the topological structure. For the first case an advanced apparatus to describe the kinetics of the process through a phenomenological equation of the sintering theory has been developed (Geguzin, 1984). Within the framework of this approach the elementary sintering models of the system consisting of equisized spheres are investigated.…”

Section: Introductionmentioning

confidence: 99%

3‐Dimensional Structure‐Imitation Model of Evolution ofMicrostructure of Powder Body During Sintering

Kamenin¹,

Kadushnikov²,

Alievsky³

et al. 1997

Texture, Stress, and Microstructure

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This paper describes a 3D structure-imitation computer model of evolution of the powder compactduring sintering and recrystallizationwithout nucleation. At the initial stages ofthe evolution processes (sintering until a mosaic structure of boundaries is formed) the model particles are spheres, and two-particle interaction laws control their evolution. During sintering the degree ofmutual penetration ofthe particles increases, regions where spherical particles are wholly facetted by contacts with neighboring particles are formed and grow. These particles are described using the formalism of Voronoi radical polyhedra, and grain growth laws govern their evolution. The model predicts the time dependencies of the following structure parameters of the polyhedra: average polyhedron size and dispersion, total surface of the facets of the polyhedra and total length of the edges of the polyhedra.

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“…Expression (3) can be derived if to differentiate with respect to time the known phenomenological formula (Geguzin, 1984) that describes the kinetics of the initial stage of mutual sintering of spherical grains…”

Section: Structure-simulating Model Of Sintering a Powder Bodymentioning

confidence: 99%

“…The radius of contact x can be expressed through L, the distance between the centers of contacting particles (Geguzin, 1984)…”

Section: Regularities Of Sintering Kinetics In ''Weightlessness'' (Comentioning

confidence: 99%

Effect of Gravity on the Kinetics of Consolidation of Powder Bodies

Kadushnikov¹,

Nurkanov²,

Шак³

et al. 2003

Texture, Stress, and Microstructure

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Characteristics of the sintering mechanism of compacts from ultrafine powders

Cited by 15 publications

References 4 publications

Comparative Study of the Silver Nano-/Microstructures Deposited from Aerosol and Fog

Comparative Study of the Silver Nano-/Microstructures Deposited from Aerosol and Fog

3‐Dimensional Structure‐Imitation Model of Evolution ofMicrostructure of Powder Body During Sintering

Effect of Gravity on the Kinetics of Consolidation of Powder Bodies

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