Fig. 5: Cross-sectional analysis and APT specimen preparation of NPG-Pt thermally coarsened in oxidative atmosphere. | npj Materials Degradation

Fig. 5: Cross-sectional analysis and APT specimen preparation of NPG-Pt thermally coarsened in oxidative atmosphere.

From: Morphological evolution of Pt-modified nanoporous gold after thermal coarsening in reductive and oxidative environments

Fig. 5

SEM images showing FIB sample preparation of an APT sample for Cu-filled NPG-Pt, heated at 300 °C in air. a Sample surface (scale bar is 20 μm). b Cut out showing the Cu-filled NPG layer, between the Cu deposition and bulk alloy (scale bar is 2 μm). c A high magnification image showing the fine ligament-pore structure (scale bar is 200 nm). d The APT needle following annular milling (scale bar is 500 nm). e The final APT specimen after low-kV sharpening (scale bar is 200 nm).

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