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Cross-sectional morphology of an indent in the coating , with arrows pointing to the shear bands.
High resolution XTEM micrographs showing the nanostructure before indentation (a) and after indentation in the densified area (b) and in the intensely sheared area (c), as indicated in Fig. 1.
XTEM micrographs showing a pileup appearing in the coating , indicated by an arrow in the overview of the indent, with the extrusion composed mainly of embedded with a few TiC nanocrystallite and dense TiC nanocrystallites packed behind the extrusion (to the right-bottom corner of the micrograph).
Coating thickness , multilayer periodicity , TiC particle size , and volume fraction , and mechanical properties including hardness and Young’s modulus . The ratios and are related to the elastic strain to failure (elasticity index) and the resistance to plastic deformation, respectively.
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