| Autor: |
KUDRYAVTSEV Pavel Gennadievich |
| Jazyk: |
English<br />Russian |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Нанотехнологии в строительстве, Vol 10, Iss 6, Pp 124-155 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2075-8545 |
| DOI: |
10.15828/2075-8545-2018-10-6-124-155 |
| Popis: |
Porous materials are formed from dispersed particles of various shapes. The porous structure of such materials is determined by the shape and nature of the packing of their structural units. As a model for the analysis of the structure of porous materials, model-packing units were selected in the form of spherical particles and fibers. Separately, the pore structure in foam-like regular porous materials was considered. It is shown that the pore volume in such packages grows with the reduction of the coordination number of the packed spherical particles. To study this regularity, the structural types of crystal lattices of various chemical substances were analyzed. Examples of such packages are most metallic elements and all inert gases, except for helium. These substances crystallize in simple structural types. All of them can be considered as packing of balls of identical radii. Such regularities are observed strictly up to the coordination number 4. With coordination number 3, a very openwork, loose package is formed. When forming mixed packages, the coordination number can have fractional values. A special group is represented by structures with coordination number |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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