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Updated: Apr 23, 2026

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
Interaction of electrons with light metal hydrides in the transmission electron microscope
Yongming Wang1, Takenobu Wakasugi2, Shigehito Isobe3
1Creative Research Institution of Hokkaido University, N21W10, North Ward, Sapporo 001-0021, Japan wang@eng.hokudai.ac.jp.
Abstract:
Transmission electron microscope (TEM) observation of light metal hydrides is complicated by the instability of these materials under electron irradiation. In this study, the electron kinetic energy dependences of the interactions of incident electrons with lithium, sodium and magnesium hydrides, as well as the constituting element effect on the interactions, were theoretically discussed, and electron irradiation damage to these hydrides was examined using in situ TEM. The results indicate that high incident electron kinetic energy helps alleviate the irradiation damage resulting from inelastic or elastic scattering of the incident electrons in the TEM. Therefore, observations and characterizations of these materials would benefit from increased, instead decreased, TEM operating voltage.
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