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(Color) Strain as “seen” through the x-ray beam window. The depth profile highlights interface strains and illustrates the TGO strain evolving from compressive to tensile with corresponding increasing externally applied stress.
(Color online) (a) Schematic representation of the experimental setup. (b) Image of the sample attached to the thermo-mechanical experimental setup. (c) Example diffraction rings for the different layers in the TBC system.
(Color) (a) TGO biaxial strain obtained for a particular data point using (116) crystallographic plane. (b) TGO biaxial strain verified for the same data point using (024) crystallographic plane. (c) Representative contour plot illustrating the depth-resolved strains obtained using XRD peaks identified for the various layers.
(Color) In-plane strain values over the depth of the TBC layers taken in situ during the thermo-mechanical cycle (corresponding TGO in-plane stresses are highlighted in the box).
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