Substitution behavior of Ag atoms in the Ti2AlC ceramic

• DOI: 10.1111/jace.14561
• Publication Date: 2016-10-24T11:38:58Z
• Authors: Chengjie Lu; Guochao Wang; Guang Yang; Guohua Fan; Jie Zhang; Xiaowen Liu
• Keywords: Nanoclusters

Abstract In this study, the substitution behavior of Ag atoms in Ti 2 AlC ceramic was investigated using high‐angle annular dark field scanning transmission electron microscopy (HAADF‐STEM). The TEM sample Ag/Ti interaction area prepared following wetting experiment, which carried out at 1030°C for 5 minute sessile drop method. “single atoms” or “nanoclusters” were found crystal lattice substrate. characterizations along two typical crystallographic orientations suggest that both and Al could be substituted by during process. addition, would contribute to expansion, coordinated elastic distortion nanoclusters with small size. However, when exceeded critical size, intact structure no more sustain defects like stacking faults formed, based on nanotwins polycrystals nucleated.