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In situ atomic-scale oscillation sublimation of magnesium under CO? conditions.

Sun, Yong; Guo, Jianxin; Fernandez, Carlos; Huang, Jianyu; Peng, Qiuming


Yong Sun

Jianxin Guo

Jianyu Huang

Qiuming Peng


Understanding the interactive role between Mg and CO? is crucial for many technological applications, including CO? storage, melting protection, corrosion resistance, and ceramic welding. Here we report observations of rapid oscillation sublimation of Mg at room temperature in the presence of both CO? gas and electron irradiation using environmental transmission electron microscopy. The sublimation is mainly related to phase transformation of amorphous MgCO?. Differing from the direct formation of gas-state MgCO?, which attributes to the sublimation of pure Mg under a mild electron beam dose, a unique oscillation process is detected during the process of Mg sublimation under a harsh electron beam dose. The main reason stems from the first-order reaction of a reversible decomposition-formation of amorphous MgCO?. These atomic-level results provide some interesting insights into the interactive role between Mg and CO? under electron beam irradiation.


SUN, Y., GUO, J., FERNANDEZ, C., HUANG, J. and PENG, Q. 2019. In situ atomic-scale oscillation sublimation of magnesium under CO2 conditions. Langmuir [online], 35(1), pages 300-305. Available from:

Journal Article Type Article
Acceptance Date Dec 8, 2018
Online Publication Date Dec 10, 2018
Publication Date Jan 31, 2019
Deposit Date Jan 21, 2019
Publicly Available Date Dec 11, 2019
Journal Langmuir
Print ISSN 0743-7463
Electronic ISSN 1520-5827
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 35
Issue 1
Pages 300-305
Keywords Magnesium; Carbon dioxide; Sublimation; Gas-state; Amorphos
Public URL