caa a22 4500 463172825 CHVBK 20180406164818.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10717-007-0050-3 doi (NATIONALLICENCE)springer-10.1007/s10717-007-0050-3 Analysis of the mechanisms of plasticity and failure of metal oxide based nanoceramic materials (Review) [Elektronische Daten] [L. Vasil'ev, O. Karban'] Possible mechanisms of the plasticity and failure of nanoceramic materials based on ZrO2 and Y2O3 and their mixtures are examined. It is established that macrodislocations—linear defects in the translational symmetry of a macrolattice whose sites are nanograins — are the most likely source of plastic deformation transfer in a nanocrystalline ceramics. In a continuum description of the mechanical properties of macrolattices it is correct to use models from the theory of dislocations and failure. Specifically, on this basis it is possible to describe mechanisms of plastic deformation and failure of nonceramic materials. The most likely reasons for the small excess plasticity of a nanoceramic are the high nonuniformity of the nanostructure and the substantial sizes of the pores after sintering. The most likely mechanism of failure is an increase in the size of the large pores, which is due to the emergence of a substantial number of macrodislocations on their surface. Springer Science+Business Media, Inc., 2007 Vasil'ev L. Physical & Engineering Institute, Ural Branch of the Russian Academy of Sciencies, Ekaterinburg, Russia aut Karban' O. Physical & Engineering Institute, Ural Branch of the Russian Academy of Sciencies, Ekaterinburg, Russia aut Glass and Ceramics Springer US 64/5-6(2007-05-01), 193-200 0361-7610 64:5-6<193 2007 64 10717 https://doi.org/10.1007/s10717-007-0050-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10717-007-0050-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vasil'ev L. Physical & Engineering Institute, Ural Branch of the Russian Academy of Sciencies, Ekaterinburg, Russia aut NATIONALLICENCE 700 1- Karban' O. Physical & Engineering Institute, Ural Branch of the Russian Academy of Sciencies, Ekaterinburg, Russia aut NATIONALLICENCE 773 0- Glass and Ceramics Springer US 64/5-6(2007-05-01), 193-200 0361-7610 64:5-6<193 2007 64 10717 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer