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Figure 1
(a) Band contrast image of Area 1 shows typical dense microstructure of the polycrystalline ceramics. (b) Orientation distribution function plotted as pole figures (mean orientation per grain) for Area 1 showing nearly random orientation of grains, upper hemisphere, contouring refers to multiple of uniform distribution (m.u.d.), maximum and minimum m.u.d. values for each pole figure are indicated. (c) Histogram of misorientation angle (data for all three Areas included) across the GBs showing a distribution close to a uniform orientation distribution function (ODF) except for a peak at 67.8°C corresponding to TBs compatible with traces of {101} twin planes.

ISSN: 2052-5206
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