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The Special Role of Anodic Second Phases in the Micro-Galvanic Corrosion of EW75 Mg Alloy
Electrochimica Acta, 2016Abstract It is well known that second phases act as micro-cathodes in the corrosion of traditional Mg alloys. However, the effect of second phases on the corrosion behavior of Mg-rare earth (RE) alloys is ambiguous in view of the second phases consisting of Mg and more active RE elements. The role of second phases in the corrosion of cast EW75 (Mg–5Y–
Peng Chen, Jinhui Liu, Yingwei Song
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Numerical modeling of micro-galvanic corrosion
Electrochimica Acta, 2011Abstract A novel numerical model capturing the evolution of cross-sectional microstructure to investigate its effect on corrosion behavior of magnesium (Mg) alloys is presented in this work using a moving mesh technique in COMSOL Multi-Physics ® . The model is capable of tracking the moving boundary of the corroding phase (α phase).
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Journal of The Electrochemical Society, 2017
An improved finite element model was established to demonstrate the steric hindrance effect of the precipitated corrosion product (Al(OH)(3)) on micro-galvanic corrosion triggered by intermetallic ...
Yongchao Wang +4 more
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An improved finite element model was established to demonstrate the steric hindrance effect of the precipitated corrosion product (Al(OH)(3)) on micro-galvanic corrosion triggered by intermetallic ...
Yongchao Wang +4 more
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Numerical Simulation of Micro-Galvanic Corrosion of Al Alloys: Effect of Chemical Factors
Journal of The Electrochemical Society, 2017A finite element model for simulating the propagation of micro-galvanic corrosion of Al alloys induced by intermetallic particle was established to reveal the dynamic changes including a moving dis ...
Litao Yin +3 more
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Materials Characterization, 2018
Abstract The corrosion behavior of lath bainitic and granular bainitic steels in 0.01 mol/L NaCl solution was studied by SEM and TEM observation, electrochemical monitoring and weight loss test. The results indicate that the micro galvanic couple forms between the steel matrix and the secondary phase, which causes non-uniform micro corrosion on ...
Junhua Dong, Yangtao Zhou
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Abstract The corrosion behavior of lath bainitic and granular bainitic steels in 0.01 mol/L NaCl solution was studied by SEM and TEM observation, electrochemical monitoring and weight loss test. The results indicate that the micro galvanic couple forms between the steel matrix and the secondary phase, which causes non-uniform micro corrosion on ...
Junhua Dong, Yangtao Zhou
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Corrosion of an Antique Casting Bronze Alloy Induced by Micro-Galvanic Effect between Phases
2022The corrosion behavior of an antique casting bronze induced by micro-galvanic effect between phases was studied. The (α(II)+δ) eutectoid is 15-25 mV in Kelvin potential higher than α(I) phase, and the δ phase in (α(II)+δ) eutectoid 10-30 mV higher than α(II) phase.
Herong Zhou +4 more
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Micro-galvanic Corrosion of Cu/Ru Couple in KIO4 Solution
2017This chapter focuses on the study of micro-galvanic corrosion of the Cu/Ru couple in KIO4 solution. Practical nobility across the Cu/Ru interface was evaluated by Volta potential mapping, and the morphological changes were monitored by in situ atomic force microscopy measurement during exposure in a KIO4 solution.
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The role of second phases in the Micro‐Galvanic Corrosion Mechanism of AZ31B Magnesium Alloy
ChemistrySelectAbstract The effect of the second relative on the microgalvanic corrosion of AZ31B alloy was studied. The behavior mechanism of the second phase in corrosion was discussed by adjusting the area ratio of the second phase by heat treatment.
Xiangyu Li +5 more
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Electrochimica Acta, 2019
Abstract This work is a further step to develop a finite element model to simulate localized corrosion of aluminum alloys driven by micro-galvanic effects. The focus herein is to explore the effect of density (porosity and tortuosity) of Al(OH)3 precipitates generated both on the electrode surface and in the liquid phase.
Litao Yin +5 more
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Abstract This work is a further step to develop a finite element model to simulate localized corrosion of aluminum alloys driven by micro-galvanic effects. The focus herein is to explore the effect of density (porosity and tortuosity) of Al(OH)3 precipitates generated both on the electrode surface and in the liquid phase.
Litao Yin +5 more
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Journal of Alloys and Compounds, 2019
Abstract The relative potential difference can be treated as an index of local corrosion of alloys. Since local corrosion is driven by the micro-galvanic coupling, which is consist of the micro-constituent phases and the matrix. They present distinct potential difference normally.
Ruiling Jia +5 more
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Abstract The relative potential difference can be treated as an index of local corrosion of alloys. Since local corrosion is driven by the micro-galvanic coupling, which is consist of the micro-constituent phases and the matrix. They present distinct potential difference normally.
Ruiling Jia +5 more
openaire +1 more source