Premium
Compressive Properties of Yttrium Oxide
Author(s) -
Ünal Özer,
Akinc Mufit
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb07950.x
Subject(s) - yttrium , materials science , oxide , composite material , crystallite , brittleness , deformation (meteorology) , compressive strength , stress (linguistics) , dislocation , elastic modulus , strain rate , metallurgy , philosophy , linguistics
Compressive properties of polycrystalline yttrium oxide (Y 2 O 3 ) were studied by slow‐strain‐rate experiments (ε= 5.7 × 10 –6 s −1 ) between room temperature and 1600°C. It was shown that Y 2 O 3 fails in a brittle manner up to 1000°C, and at 1200°C and above plastic deformation becomes dominant. Plastic deformation of Y 2 O 3 takes place exclusively by dislocation motion. Maximum stress, yield stress, and elastic modulus decrease with increasing temperature, although the decrease at temperatures above 1000°C is much more pronounced.