Effect of adding different contents of mercury to magnesium on discharge and corrosion performances of magnesium anode sheet

Wang, Libo; Li, Peijie; He, Ling

doi:10.1134/s1023193511080167

Cited by 10 publications

(6 citation statements)

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“…Alloy MHG2 demonstrated a more negative corrosion potential and a higher corrosion current density than MHG3, caused by the high activity of Mg 3 Hg. Mg 3 Hg could also reduce the formation of a corrosion product film on the alloy surfaces [6]. The passivation of the polarization curves of MHG4 can be observed in Figure 3, passivation disappeared as the Ga/Hg ration decreased.…”

Section: Resultsmentioning

confidence: 85%

“…Pure magnesium (99.99%) was melted in a resistance furnace under the protection of gaseous CO 2 and SF 6 . The pre-prepared Mg-Hg and MgGa master alloys were then added into the melt at 600℃.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The specific energy of a seawater battery can reach 150Wh/kg. The addition of an suitable amount of Hg may inhibit microgalvanic corrosion, and thus reduce the thickness of corrosion film on alloy surfaces; Mg 3 Hg as the second phase may also activate a magnesium matrix [5,6]. However, these properties are often accompanied by disadvantages such as significant self-corrosion and short discharge times [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

Wang

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. This study investigated the impacts of Mg-Hg-Ga alloys of various Ga/Hg ratios on phase constituents and electrochemical performance. The relationship between composition and phase constituents of the casting alloys were investigated by SEM and XRD Potentiodynamic polarization curves and the galvanostatic curves of the alloys in 3.5wt% NaCl solution were obtained. With a Ga/Hg ratio greater than 0.97, the second phase changes from Mg 3 Hg to Mg 5 Ga 2 , and the normal eutectic becomes a divorced eutectic. Additionally, corrosion is inhibited and passivation appears with an increase in the Ga/Hg ratio increase. With a starting Ga/Hg ratio of less than 0.68, the discharge process becomes steadier and discharge time simultaneiously increases with the Ga/Hg ratio. Mg-Hg-Ga alloys with a 0.68 Ga/Hg ratio are suitable as the anode material for seawater batteries.

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Section: Resultsmentioning

confidence: 85%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

Wang

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The method of master alloy preparation was described earlier. 6) The other alloys were obtained by diluting this master alloy. This method not only ensures accurate compositions but also guarantees identical nucleation conditions.…”

Section: Methodsmentioning

confidence: 99%

“…5) When the content of Hg exceeds the maximum solid solubility, Hg is detrimental to corrosion performance and accelerates microgalvanic corrosion. 6) Under the equilibrium solidification condition, the solid solution of Hg in Mg is 3.6 mass% at 721 K and 0.9 mass% at 673 K.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Maximum Solid Solubility in Mg–Hg Alloys by the Lever Rule

Wang

2013

Mater. Trans.

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The microstructures of MgHg alloys with 1.12.9 mass% Hg were investigated in this paper. Under the non-equilibrium solidification condition, the examined MgHg alloys had a two-phase structure consisting of a solid solution phase and a spheroidal-graphite iron-like divorced eutectic. Eutectic ¡-Mg and eutectic Mg 3 Hg formed separately, so the proportion of eutectic Mg 3 Hg could be accurately measured. A method was proposed to estimate the maximum solid solubility of Hg in Mg under the non-equilibrium solidification condition by measuring the area fraction of Mg 3 Hg in metallographes. The maximum solid solubility of Mg2.4 mass% Hg was 0.81 and 0.69 mass%, with cooling rates of 0.67 and 2.0 K/s, respectively. The maximum solid solubility decreased as the cooling rate increased and increased as the Hg content increased.

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Enhancing the Performance of Mg–Al Brine Water Batteries Using Conductive Polymer-PEDOT:PSS

Abdulrehman

Yousif

Al-Ameri

et al. 2014

ICREGA’14 - Renewable Energy: Generation and Applications

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Effect of adding different contents of mercury to magnesium on discharge and corrosion performances of magnesium anode sheet

Cited by 10 publications

References 20 publications

Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

Estimation of Maximum Solid Solubility in Mg–Hg Alloys by the Lever Rule

Enhancing the Performance of Mg–Al Brine Water Batteries Using Conductive Polymer-PEDOT:PSS

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Effect of adding different contents of mercury to magnesium on discharge and corrosion performances of magnesium anode sheet

Cited by 10 publications

References 20 publications

Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

Estimation of Maximum Solid Solubility in Mg&ndash;Hg Alloys by the Lever Rule

Enhancing the Performance of Mg–Al Brine Water Batteries Using Conductive Polymer-PEDOT:PSS

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Estimation of Maximum Solid Solubility in Mg–Hg Alloys by the Lever Rule