Mechanical twinning of yttrium oxide single crystals

The deformation structure of an yttrium oxide single crystal under point load was studied by microhardness and electron microscopy. It was concluded that mechanical twinning is the main mechanism of plastic deformation of these single crystals. A twin was simulated by rotating the structure around t...

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Bibliographic Details
Published inSurface investigation, x-ray, synchrotron and neutron techniques Vol. 4; no. 6; pp. 923 - 927
Main Authors Akchurin, M. Sh, Zakalyukin, R. M., Kovalchuk, M. V., Kupenko, I. I.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.11.2010
Subjects
Chemistry and Materials Science
Materials Science
Surfaces and Interfaces
Thin Films
Neutron Technique
Yttrium Oxide
Mechanical Twinning
Threefold Axis
Point Load
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Summary:The deformation structure of an yttrium oxide single crystal under point load was studied by microhardness and electron microscopy. It was concluded that mechanical twinning is the main mechanism of plastic deformation of these single crystals. A twin was simulated by rotating the structure around the three-fold axis. It was shown that the average change of the distance between anions was about 5% and that between cations was 15%. The comparison with the structure of the regions of the fluorite single crystals and optical ceramics deformed in the analogous manner was performed.
ISSN:1027-4510
1819-7094
DOI:10.1134/S102745101006008X