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Transmission Electron Microscopy of Annealed ZrO 2 +8 Mol% Sc 2 O 3
Author(s) -
MOGHADAM FARHAD K.,
YAMASHITA TOM,
SINCLAIR ROBERT,
STEVENSON DAVID A.
Publication year - 1983
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.1151-2916.1983.tb10020.x
Subject(s) - transmission electron microscopy , materials science , phase (matter) , crystallography , fluorite , electron diffraction , analytical chemistry (journal) , electron microscope , diffraction , x ray crystallography , grain size , chemistry , metallurgy , nanotechnology , optics , physics , organic chemistry , chromatography
The influence of heat treatment (800°C for 200 h) on the micro‐structure of 8 mol% Sc 2 O 3 ‐ZrO 2 was investigated by XRD and TEM. The starting material was initially characterized and found to contain predominantly cubic‐fluorite phase grains, with <5% of the grain containing the rhombohedral β phase. The β phase was positively identified by the analysis of electron diffraction pattern and by quantitative energy dispersive X‐ray analysis. On aging, the relative amount of β phase was found to increase to about 15 to 20% by XRD measurement; this was confirmed by TEM observation. The orientation relation between the different variants of the β phase within a grain was determined to be (100) r ||(010) r , and the geometrical arrangement of these variants within the grain was deduced using a 2 1 / 2 D imaging electron microscopy technique.