Fig. 1: Internal stress induced by sintering. | Nature Communications

Fig. 1: Internal stress induced by sintering.

From: Large internal stress induced nonlinear current-voltage behavior in nanodiamond strengthened ZnO ceramics

Fig. 1

a Schematic diagram illustrating the thermal stress and prestress generated by HTS and CSP, respectively. b SEM image of a fractured surface of an ND/ZnO composite showing ND particles embedded in ZnO matrix, where embedded NDs are indicated by arrows. c TEM image of ND/ZnO composite, where the ND particles marked by arrows are located at GBs or triple junctions. d Normal strain distribution for monolithic ZnO (blue) and the region close to ND (red) along the εxx direction in the area marked in c, respectively; the insets are corresponding GPA images for the monolithic ZnO (left) and composite (right), respectively.

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