Inelastic behavior of ceramics with hierarchical pore structure under compression

M. V. Grigor’ev, N. L. Savchenko, S. P. Buyakova, S. N. Kul’kov

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The compaction behavior is studied in Al2O3 ceramics with a pore space volume in the range from 35 to 60% and with the following three types of hierarchical pore structure: coarse porosity with a size of 80 to 100 μm, fine porosity with a size of 14 to 15 μm, and intermediate interblock porosity comprised of elongated (110–120 μm) porous microchannels formed as a result of zonal isolation during sintering. It is shown that the obtained hierarchical porous structure causes the formation of a hierarchical deformation structure in the volume of ceramics and leads to a decrease in the extent of destruction processes from the macroscopic scale in the case of unimodal ceramics to the microscale destruction comparable with the sizes of the blocks formed during sintering.

Original languageEnglish
Pages (from-to)723-726
Number of pages4
JournalTechnical Physics Letters
Volume43
Issue number8
DOIs
Publication statusPublished - 1 Aug 2017

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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