Impact of rare earth elements on micro-galvanic corrosion in magnesium alloys: A comparative study of Mg-Nd and Mg-Y binary alloys

Zhang, Huanghua; Zhao, Yuming; Liu, Jinhui; Xu, Jilei; Guo, Dong; Li, Chengxu; Zhou, Xianghong; Yang, Peixu; Zhang, Shaojun

doi:10.1016/j.ijoes.2023.100160

Cited by 11 publications

(2 citation statements)

References 26 publications

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“…Therefore, the different performance of Mg-Zn-Nd-Zr and Mg-Zn-Nd alloys is mainly induced by the volume fraction of second phase. The number of the second phase Mg-Zn-Nd-Zr alloys is higher, so the corrosion rate is high due to galvanic corrosion at the initial stage of immersion [7]. The effect of second phase distribution on mechanical properties will not be discussed here, because the precipitation strengthening mechanism is not the main strengthening mechanism in magnesium alloy, and the difference between the second phase volume fraction of two alloys is not obvious enough.…”

Section: The Effect Of Magnesium Alloy Composition On the Performance...mentioning

confidence: 99%

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Study on Mechanical Properties and Degradation Behavior of Magnesium Alloy Vascular Clip

Zhang,

Gao,

Tian

et al. 2023

JFB

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The Mg alloy vascular clip has biodegradability and good biocompatibility, which can improve the convenience and safety of clinical application. However, the Mg alloy vascular clip also has some disadvantages, such as an unreasonable structure design and a degradation rate which is too fast. In this study, the process of clamping blood vessels with a biodegradable Mg alloy (Mg-Zn-Nd-Zr and Mg-Zn-Nd) general V-type vascular clip was simulated by finite element simulation software (Abaqus). A new type of vascular clip, the P-type vascular clip, was analyzed and investigated through simulation. The differences between Mg alloy vascular clips of V-type and P-type were analyzed by finite element simulation. In addition, the effects of Zr element on the mechanical properties and corrosion resistance of P-type vascular clips were also investigated to improve the mechanical stability. The results show that during the V-type vascular clip closure of Mg-Zn-Nd-Zr alloy, this clip has some problems, such as uneven distribution of blood vessel stress, crevices in blood vessels and stress concentration. The improved P-type vascular clip has uniform closure, and there is no gap in the blood vessel, which can effectively avoid stress concentration. The improved P-type vascular clip is well closed and can effectively avoid stress concentration. The corrosion resistance of the Mg-Zn-Nd-Zr alloy P-type clip was better than that of the Mg-Zn-Nd alloy P-type clip (degradation rate of 2.02 mm/y and 2.61 mm/y on the 7th day, respectively). Mg-Zn-Nd-Zr alloy The P-type vascular clip remained closed even on the 7th day, which could meet the requirements of clinical application.

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Section: The Effect Of Magnesium Alloy Composition On the Performance...mentioning

confidence: 99%

“…Therefore, the alloy vascular clip has great application potential [5]. However, some weaknesses, such as unreasonable structural design or local corrosion caused by galvanic corrosion, limit its application [1,6,7].…”

Section: Introductionmentioning

confidence: 99%

Study on Mechanical Properties and Degradation Behavior of Magnesium Alloy Vascular Clip

Zhang,

Gao,

Tian

et al. 2023

JFB

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Development of Ternary Magnesium Alloys for Laser Powder Bed Fusion: Optimizing Oxide Layer Thickness

Breitbach,

Julmi,

Behrens

et al. 2024

Adv Eng Mater

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Magnesium alloys pose challenges in additive manufacturing, due to the difference between the melting temperature of magnesium oxide (2825 °C) on the powder particles and the boiling point of metallic magnesium (1093 °C). A promising approach to overcoming the difficulties is the reduction of the thickness of the high‐melting oxide layer on the surface of the particles. Magnesium alloys, each containing varying amounts of strontium, neodymium, and yttrium, are cast and subsequently analyzed in terms of their microstructures, mechanical properties, oxide layer thicknesses, and corrosion behavior. Alloying magnesium with strontium results in a reduction of the oxide layer thickness, which reaches a minimum of 0.5 wt% strontium content. The presence of rare earth elements increases the strength of the alloys, although the inclusion of neodymium results in an increase in the oxide layer thicknesses. On the other hand, the oxide layer thickness remains unaffected when alloying with yttrium. However, further increases in strontium content up to the monolithic phase Mg17Sr2 have been found to result in a reduced effect on the open‐circuit potential. Further studies should be conducted to investigate the suitability of strontium as an alloying element to reduce the oxide layer thickness of magnesium particles.

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Microstructure and mechanical properties of extruded Mg-6Al-2X (X = Cu/Ni/Fe) alloy used degradable bridge plugs

Liu,

Zhang

et al. 2023

Adv Compos Hybrid Mater

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Impact of rare earth elements on micro-galvanic corrosion in magnesium alloys: A comparative study of Mg-Nd and Mg-Y binary alloys

Cited by 11 publications

References 26 publications

Study on Mechanical Properties and Degradation Behavior of Magnesium Alloy Vascular Clip

Study on Mechanical Properties and Degradation Behavior of Magnesium Alloy Vascular Clip

Development of Ternary Magnesium Alloys for Laser Powder Bed Fusion: Optimizing Oxide Layer Thickness

Microstructure and mechanical properties of extruded Mg-6Al-2X (X = Cu/Ni/Fe) alloy used degradable bridge plugs

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