Fig. 1: Cross-sectional analysis and APT specimen preparation of NPG-Pt thermally coarsened in reductive atmosphere. | npj Materials Degradation

Fig. 1: Cross-sectional analysis and APT specimen preparation of NPG-Pt thermally coarsened in reductive atmosphere.

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

Fig. 1

SEM images showing FIB sample preparation of an APT sample for Cu-filled NPG-Pt, heated at 300 °C in Ar-H2. a Sample surface (scale bar is 20 μm). b FIB cross-section cut 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 coarsened ligaments and the inset showing an example of entrapped voids (V) within a ligament (L), completely independent from a Cu-filled pore (P) (scale bar is 200 nm). d The APT needle following annular milling (scale bar is 200 nm). e The final APT specimen after low-kV sharpening (scale bar is 200 nm).

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