Different role of second phase in the micro-galvanic corrosion of WE43 Mg alloy in NaCl and Na2SO4 solution

Feng, Baojing; Liu, Guonan; Yang, Peixu; Huang, Sensen; Qi, Dongqing; Chen, Peng; Wang, Chengduo; Du, Jiang; Zhang, Shaojun; Liu, Jinhui

doi:10.1016/j.jma.2020.12.013

Cited by 42 publications

(7 citation statements)

References 26 publications

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“…R f represents the film resistance, and Q f is the film capacitance. R L and L describe the low-frequency inductive loop, which corresponds to corrosion nucleation of localized corrosion [ 34 ]. Localized corrosion can be observed in Figure 7 e. According to the fitting results in Table 2 , extruded WE43 alloys showed higher R t and R f values, indicating a slower dissolution rate and better film protection.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Corrosion Performance of Extruded and Forged WE43 Mg Alloy

Liu

Feng

et al. 2022

Materials

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Adjusting the microstructure through the deformation process is one of the ways to improve the properties of Mg alloys. Most studies have focused on the influence of the microstructure after deformation treatment on the mechanical properties of Mg alloys. In this paper, extruded and forged Mg-Gd-Y-Nd-Zr alloys were selected to investigate the corrosion performance of two deformed magnesium alloys immersed in 0.6 M NaCl solution using a hydrogen evolution test, a weight loss test, an immersion experiment, and an electrochemical test. The results showed that WE43 alloys undergoing different deformation treatments presented different microstructures, which led to different corrosion behaviors and corrosion resistance. The extruded WE43 alloy showed uniform corrosion, while the forged WE43 alloy suffered severe local galvanic corrosion. Meanwhile, the corrosion rate of the forged WE43 alloy was about four times faster than that of the extruded WE43 alloy.

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Section: Resultsmentioning

confidence: 99%

Comparison of Corrosion Performance of Extruded and Forged WE43 Mg Alloy

Liu

Feng

et al. 2022

Materials

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“…This phenomenon is attributed to Cl − being more corrosive than SO 4 2− [ 31 ]. The WE43 alloy in these two solutions showed a different result, which is interesting [ 4 ].…”

Section: Resultsmentioning

confidence: 99%

“…Magnesium alloys have attracted special interest in many fields for their light weight, high specific strength, and great biodegradability [ 1 , 2 ]. They have considerable potential for application in transportation, aerospace, electronic technology, and especially biomedicine [ 3 , 4 , 5 ]. Magnesium alloys have a similar density to human bones and good biocompatibility to be used as human implant materials, which is why they are known as revolutionary metal materials [ 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…According to previous results, Cl − is much more aggressive than SO 4 2− to Mg alloys [ 31 ]. The present authors recently found that WE43 (Mg–Y–Gd–Nd–Zr) alloy shows worse corrosion resistance in Na 2 SO 4 than in NaCl solution [ 4 ]. Meanwhile, the microgalvanic corrosion behavior of WE43 alloy in Na 2 SO 4 solution, where the second phase acts as anode and dissolves preferentially, is poles apart from that in NaCl solution, where the second phase acts as a cathode.…”

Section: Introductionmentioning

confidence: 99%

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Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na2SO4 Solutions

Yang

Feng

et al. 2021

Materials

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As a kind of potential biomedical material, Mg–Ca alloy has attracted much attention. However, the role of Ca-containing intermetallics in microgalvanic corrosion is still controversial. In 0.6 mol/L NaCl and Na2SO4 solutions, the microgalvanic corrosion behavior of the second phase and Mg matrix of Mg–Ca and Mg–Al–Ca alloys was examined. It was confirmed that the Mg2Ca phase acts as a microanode in microgalvanic corrosion in both NaCl and Na2SO4 solutions, with the Mg matrix acting as the cathode and the Al2Ca phase acting as the microcathode to accelerate corrosion of the adjacent Mg matrix. It was also found that Cl− and SO42− have different sensibilities to microgalvanic corrosion.

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“…SKPFM является мощным инструментом для изучения слабого взаимодействия атомов на поверхности исследуемого сплава, которое отражает поверхностный потенциал образца в корреляции с морфологией его поверхности [44,[471][472][473][485][486][487][488][489][490][491][492][493].…”

Section: анализ распределения локального вольта-потенциалаunclassified

Современные Концепции Изучения Процессов Коррозионной Деградации Материалов И Покрытий: Теория, Практика, Методология Исследований

2022

Физико-Химические Основы Локальной Гетерогенной Коррозии Магниевых И Алюминиевых Сплавов

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В настоящее время самыми популярными металлическими материалами, используемыми в промышленности, являются сталь, чугун, а также медные, цинковые, титановые, алюминиевые и магниевые сплавы. Исследования, освещенные в данной мо- нографии, проводились на магниевых и алюминиевых сплавах.

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Different role of second phase in the micro-galvanic corrosion of WE43 Mg alloy in NaCl and Na2SO4 solution

Cited by 42 publications

References 26 publications

Comparison of Corrosion Performance of Extruded and Forged WE43 Mg Alloy

Comparison of Corrosion Performance of Extruded and Forged WE43 Mg Alloy

Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na2SO4 Solutions

Современные Концепции Изучения Процессов Коррозионной Деградации Материалов И Покрытий: Теория, Практика, Методология Исследований

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