In-Situ Atomic-Scale Phase Transformation of Mg under Hydrogen Conditions

Peng, Qiuming; Sun, Yong; Ge, Bingcheng; Feng, Jiawen; Guo, Jianxin; Fernandez, Carlos; Huang, Jianyu

doi:10.1021/acs.jpcc.8b04694

Cited by 5 publications

(3 citation statements)

References 34 publications

(60 reference statements)

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“…The orientation relationship (ORs) between Mg and MgO have been confirmed by the high revolution transmission electron microscopy ( HRTEM , Figure b), wherein the OR is (01̅11) Mg ||(020) MgO . This OR is akin to the oxidation behavior of pure Mg under high pure hydrogen conditions, but it is different from the observed results in the high-temperature oxidation, that is, (112̅0) Mg ||(220) MgO and [21̅1̅0] Mg ||[001] MgO , and the low-temperature confined growth of MgO, that is, (0002) Mg ||(110) MgO and [21̅1̅0] Mg || [001] MgO . In addition, the in situ observation results (Movie 1) reveal that an amorphous layer with a thickness of ∼8 nm is detected on the surface of the sample.…”

Section: Resultscontrasting

confidence: 59%

“…Moreover, as shown in Figure 1a Figure 1b), wherein the OR is (0111)Mg||(020)MgO. This OR is akin to the oxidation behavior of pure Mg under high pure hydrogen condition, 17 19 In addition, the in-situ observation results (Movie 1) reveal that an amorphous layer with a thickness of ~8 nm is detected on the surface of the sample. With increasing the sublimation time, the interface shrinks rapidly, but the thickness of the amorphous layer remains relatively stable.…”

Section: In-situ Sublimation Of Mg Under Co 2 Irradiation Conditionmentioning

confidence: 75%

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In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO₂ Conditions

et al. 2018

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Understanding the interactive role between Mg and CO 2 is crucial for many technological applications, including CO2 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 2 gas and electron irradiation using environmental transmission electron microscopy. The sublimation is mainly related to phase transformation of amorphous MgCO 3. Differing from the direct formation of gas-state MgCO3 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 3. These atomic-level results provide some interesting insights into the interactive role between Mg and CO 2 under electron beam irradiation.

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Section: Resultscontrasting

confidence: 59%

Section: In-situ Sublimation Of Mg Under Co 2 Irradiation Conditionmentioning

confidence: 75%

In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO₂ Conditions

et al. 2018

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“…At about 250°C and at normal pressure, magnesium and hydrogen can be produced, which can release hydrogen at low pressure or slightly higher temperature [22]. In the field of electrochemistry, hydrogen can also cause hydrogen corrosion in the form of hydrogen bulging [23][24][25], hydrogen embrittlement [26][27][28], and hydrogen corrosion [29,30]. Hydrogen can be immersed between the lattice of the metal and expand or deform the lattice and finally make the metal brittle that is called as hydrogen embrittlement.…”

Section: Introductionmentioning

confidence: 99%

A New Method of Edge Crack Suppression in the Rolling Process of Magnesium Alloy Sheet and Study on the Method of Cathodic Protection

Zhu

et al. 2020

Advances in Materials Science and Engineering

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A new method is proposed to solve edge cracking and corrosion in rolling process of the magnesium alloy plate. Usually in the process, the edge cracking is caused by the great temperature difference between the edge and the center of the alloy plate and the corrosion is by water in air. The method uses hot air wrapped around the plate to perfectly prevent edge cracking and corrosion. The method also includes cathodic protection for the magnesium alloy based on electrochemistry. The suppression of cathodic protection on the chemical activity of the magnesium alloy was studied. The experiment shows that the new method of edge heating with hot air wrapping is effective to prevent edge cracking and corrosion. Also, the cathodic protection can effectively suppress the chemical activity of the magnesium alloy and improve the surface quality in the rolling process of the magnesium plate, which provides a new concept in rolling process of the magnesium alloy.

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Hydrogen storage properties and mechanisms of as-cast, homogenized and ECAP processed Mg98.5Y1Zn0.5 alloys containing LPSO phase

Zhang

Yao

et al. 2021

Energy

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In-Situ Atomic-Scale Phase Transformation of Mg under Hydrogen Conditions

Abstract: In-situ atomic-scale phase transformation of Mg under hydrogen conditions. 2018

Cited by 5 publications

References 34 publications

In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO₂ Conditions

In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO₂ Conditions

A New Method of Edge Crack Suppression in the Rolling Process of Magnesium Alloy Sheet and Study on the Method of Cathodic Protection

Hydrogen storage properties and mechanisms of as-cast, homogenized and ECAP processed Mg98.5Y1Zn0.5 alloys containing LPSO phase

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In-Situ Atomic-Scale Phase Transformation of Mg under Hydrogen Conditions

Abstract: In-situ atomic-scale phase transformation of Mg under hydrogen conditions. 2018

Cited by 5 publications

References 34 publications

In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO2 Conditions

In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO2 Conditions

A New Method of Edge Crack Suppression in the Rolling Process of Magnesium Alloy Sheet and Study on the Method of Cathodic Protection

Hydrogen storage properties and mechanisms of as-cast, homogenized and ECAP processed Mg98.5Y1Zn0.5 alloys containing LPSO phase

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Product

Resources

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In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO₂ Conditions

In Situ Atomic-Scale Oscillation Sublimation of Magnesium under CO₂ Conditions