Improved corrosion resistance of Mg–8Sn–1Zn–1Al alloy subjected to low-temperature indirect extrusion

Baek, Soo-Min; Kang, Jeong Su; Kim, Jong Chan; Kim, Peter Beomcheol; Shin, Hyung‐Joon

doi:10.1016/j.corsci.2018.06.011

Cited by 21 publications

(8 citation statements)

References 40 publications

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“…Previous reports validated that the Volta potential of the Mg 2 Sn phase appears to be ∼350 mV higher than that of the α-Mg matrix in extruded Mg-Sn-based alloys, indicating that the Mg 2 Sn particles could serve as microscopic cathodes along with effectively facilitate the dissolution of the α-Mg matrix. 30,43 Therefore, the variation in the volume fraction of Mg 2 Sn precipitates could lead to different selfcorrosion rates driven by galvanic corrosion due to the presence of Mg 2 Sn particles. In addition, it can be noted that the TZQ411 alloy possesses a smaller Tafel slope (β a ) value, signifying that a stronger discharge activity could be expected during anodic polarization.…”

Section: Resultsmentioning

confidence: 99%

“…10,14,21,28,29 Many previous works indicated that the second phase particles generated in Mg alloys can serve as activation points to promote the dissolution of the Mg substrate along with facilitate the destruction of the passivation film. 17,[30][31][32][33] Moreover, the self-corrosion behavior of Mg alloys depends to a large extent on the size, morphology together with distribution of the second phase particles. Normally, extruded Mg-Sn-based alloys commonly have coarse and fine Mg 2 Sn particles coexisting within the α-Mg matrix, which is harmful to enhance the performance further.…”

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confidence: 99%

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Discharge Behavior of Mg–Sn–Zn–Ag Alloys with Different Sn Contents as Anodes for Mg-air Batteries

Cheng

et al. 2020

J. Electrochem. Soc.

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Controlling the microstructure and discharge performance of Mg-based alloys is of great importance and aimed at optimizing magnesium anode materials to the level required for power source applications. In this study, the microstructure along with discharge properties of extruded Mg-Sn-Zn-Ag alloys with Sn content ranging from 2 wt.% to 8 wt.% are investigated. The results indicate that the Mg-4Sn-1Zn-1Ag alloy exhibits the most negative discharge potential during the half-cell test than the other alloys investigated in this study. Moreover, a Mg-air battery with a Mg-4Sn-1Zn-1Ag alloy as the anode provides a relatively high cell voltage together with power density compared with the counterpart battery. Furthermore, the microscopic mechanism of an anode material exhibiting an excellent discharge performance is systematically discussed in terms of the second phase, dynamic recrystallization, crystal orientation and discharge product film.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Discharge Behavior of Mg–Sn–Zn–Ag Alloys with Different Sn Contents as Anodes for Mg-air Batteries

Cheng

et al. 2020

J. Electrochem. Soc.

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“…For instance, influences of Sn alloying on the uncoupled eutectic growth morphology in Mg-Al-Zn-Sn alloys need to be understood further, especially the interaction between eutectic intermetallic phases within these multi-phase particles. These features play important roles in determining the formability [6,7], mechanical properties [9,10,16,29,30], and corrosion resistance [31][32][33] of Mg-Sn-Al-Zn alloys.…”

Section: Introductionmentioning

confidence: 99%

Eutectic intermetallic formation during solidification of a Mg-Sn-Al-Zn-Mn alloy

Deng

Zeng

Xian

et al. 2022

Materials Characterization

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“…To date, Mg-Sn-based alloys have attained an increasing interest owing to their good applicability to plastic deformation processes, presenting Mg alloys with improved properties. 15,16,[24][25][26][27] The present studies mainly concentrate on the microstructure and mechanical properties of Mg-Sn-based alloys. For example, Wang et al 15,16 reported that the extruded Mg-Sn-Y alloys exhibited a good balance between ductility and formability.…”

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confidence: 99%

Effect of Microstructure on the Corrosion Behavior of as-cast and Extruded Mg–Sn–Y Alloys

Yang

Jiang

et al. 2020

J. Electrochem. Soc.

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The effect of microstructure on the corrosion behavior of as-cast and extruded Mg-Sn-Y alloys was investigated using measurements of hydrogen evolution, weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy, and scanning Kelvin probe force microscopy. The results showed that the corrosion rate increased in the following order: as-cast, transversal section of bar, and longitudinal section of bar. The higher corrosion rate was related to the refinement of grain size, the micro-galvanic corrosion between second phases and α-Mg matrix, and the micro-galvanic corrosion between different orientated grains. The Volta potentials of Sn 3 Y 5 and MgSnY phases were more positive than that of the α-Mg matrix. Accordingly, the Sn 3 Y 5 and MgSnY phases acted as the cathodes for micro-galvanic corrosion and accelerated the corrosion of α-Mg matrix. After extrusion, the content of second phases reduced and the grain size significantly refined. As a consequence, extrusion increased the corrosion rate of Mg-Sn-Y alloys, as the contribution of grain size refinement to increase the corrosion rate was much bigger than that of the content decrease of second phases to decrease the corrosion rate.

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Improved corrosion resistance of Mg–8Sn–1Zn–1Al alloy subjected to low-temperature indirect extrusion

Cited by 21 publications

References 40 publications

Discharge Behavior of Mg–Sn–Zn–Ag Alloys with Different Sn Contents as Anodes for Mg-air Batteries

Discharge Behavior of Mg–Sn–Zn–Ag Alloys with Different Sn Contents as Anodes for Mg-air Batteries

Eutectic intermetallic formation during solidification of a Mg-Sn-Al-Zn-Mn alloy

Effect of Microstructure on the Corrosion Behavior of as-cast and Extruded Mg–Sn–Y Alloys

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