Unveiling Corrosion Pathways of Sn Nanocrystals through High-Resolution Liquid Cell Electron Microscopy.

ABSTRACT: Unveiling materials' corrosion pathways is significant for understanding the corrosion mechanisms and designing corrosion-resistant materials. Here, we investigate the corrosion behavior of Sn@Ni₃Sn₄ and Sn nanocrystals in an aqueous solution in real time by using high-resolution liquid cell transmission electron microscopy. Our direct observation reveals an unprecedented level of detail on the corrosion of Sn metal with/without a coating of Ni₃Sn₄ at the nanometric and atomic levels. The Sn@Ni₃Sn₄ nanocrystals exhibit "pitting corrosion", which is initiated at the defect sites in the Ni₃Sn₄ protective layer. The early stage isotropic etching transforms into facet-dependent etching, resulting in a cavit

SUBMITTER: Peng X 

PROVIDER: S-EPMC10835717 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature