Effects of MgO nano particles on the mechanical properties and corrosion behavior of Mg–Zn–Ca alloy

Tang, Chaokun; Lyu, Shaoyuan; Zhao, Zihan; Chen, Minfang

doi:10.1016/j.matchemphys.2023.127380

Cited by 20 publications

(8 citation statements)

References 53 publications

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“…The objective of this study is to determine whether MgO/Mg-Zn-Ca composites with low Zn/Ca ratio has a greater corrosion resistance than that with higher ratios. Generally, refining grain size increases the density of the corrosion product layer ( Aung and Zhou, 2010 ; Luo et al, 2020 ), which effectively separates the alloy matrix from the corrosion medium, and enhances the material’s corrosion resistance ( Tang et al, 2023 ). However, the corrosion resistance of the ZX composites with larger grain size is superior to that of the 3ZX composites with smaller grain size from both electrochemical tests and immersion experiments.…”

Section: Discussionmentioning

confidence: 99%

“…Besides, MgO can simultaneously impede grain growth by pinning grain boundaries ( Fan et al, 2022 ) and enhance the mechanical properties through Orowan strengthening ( Goh et al, 2007 ). Moreover, the degradation product of MgO was the same with the Mg matrix (Mg(OH) 2 ), which could enhance the densities of the corrosion product layer ( Tang et al, 2023 ).…”

Section: Introductionmentioning

confidence: 99%

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The in vivo and in vitro corrosion behavior of MgO/Mg-Zn-Ca composite with different Zn/Ca ratio

Zhang

Tang

Feng

et al. 2023

Front. Bioeng. Biotechnol.

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The effect of Zn/Ca ratio on the corrosion behavior of Mg–3Zn-0.2Ca-1.0MgO (3ZX) and Mg–1Zn-0.2Ca-1.0MgO (ZX) was investigated on the as-extruded specimens. Microstructure observations revealed that the low Zn/Ca ratio led to the grain growth from 1.6 µm in 3ZX to 8.1 µm in ZX. At the same time, the low Zn/Ca ratio changed the nature of second phase from the existence of Mg-Zn and Ca2Mg6Zn3 phases in 3ZX to the dominated Ca2Mg6Zn3 phase in ZX. The local galvanic corrosion caused by the excessive potential difference was alleviated obviously due to the missing of MgZn phase in ZX. Besides, the in vivo experiment also showed that ZX composite exhibited a good corrosion performance and the bone tissue around the implant grew well.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The in vivo and in vitro corrosion behavior of MgO/Mg-Zn-Ca composite with different Zn/Ca ratio

Zhang

Tang

Feng

et al. 2023

Front. Bioeng. Biotechnol.

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“…(2) Owing to the small size and the similar color of MgO to the Mg matrix, it is difficult to observe a large number of MgO particles from TEM images. Therefore, only several MgO particles were provided in our previous work [25,30,31]. Based on this, a Focused Ion Beam-Scanning Electron Microscope (FIB-SEM) was employed to analyze the distribution of MgO nanoparticles in ZX0.7 composites and the results are displayed in the following Figure 6.…”

Section: Xrd Physical Phase Analysis Of Extruded Compositesmentioning

confidence: 99%

Effect of MgO Contents on the Microstructure, Mechanical Properties and Corrosion Behavior of Low-Alloyed Mg-Zn-Ca Alloy

Zhao,

Lyu,

Zhang

et al. 2024

Metals

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The effects of different MgO contents (0.3 wt.%, 0.5 wt.%, 0.7 wt.% and 1.0 wt.%) on the microstructure and properties of Mg-1Zn-0.5Ca alloy (ZX) were systematically investigated to promote the clinical application of Mg alloys. The results showed that a MgO addition promoted the precipitates of Ca2Mg6Zn3 and Mg2Ca after hot extrusion. Meanwhile, the average grain size of the ZX alloy decreased abruptly from 17.73 μm to 5.54 μm after the addition of 0.3 wt.% MgO and then reduced slowly as further increasing the MgO contents to 1.0 wt.%. The microhardness and yield strength (YS) increased gradually from 59.43 HV and 102.0 MPa in ZX to 69.81 HV and 209.5 MPa in ZX1.0, respectively. However, the elongation to failure (EL) decreased from 26.7% in ZX to 21.2% in ZX1.0 due to the increase of volume fraction of the second phase and decrease of grain size as increasing the MgO. The corrosion result showed that ZX alloy exhibited local corrosion while ZX composites (ZX0.3, ZX0.5 and ZX0.7) displayed relatively uniform corrosion owing to the fine grain size, dispersed fine second and the protective effect of corrosion product after MgO hydrolyzation. However, excessive MgO (ZX1.0) easily caused the aggregation of itself and the precipitates and deteriorated the corrosion resistance of the material.

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“…Abazari et al [27] showed that the continuous distribution of graphene oxide (GO) reinforcement has a positive effect on the microstructure, mechanical properties, and corrosion resistance of the Mg matrix, while the O-containing groups in GO also promote the deposition of the corrosion product layer [27]. However, the non-degradable nature of graphene has limited its application in the human body as implants [67]. The mechanical performance is significantly increased by adding ceramic particles such as SiC and Al 2 O 3 .…”

Section: Mg/mgo Np Compositesmentioning

confidence: 99%

Recent Advances in Magnesium–Magnesium Oxide Nanoparticle Composites for Biomedical Applications

Saberi,

Baltatu,

Vizureanu

2024

Bioengineering

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Magnesium (Mg) is considered an attractive option for orthopedic applications due to its density and elastic modulus close to the natural bone of the body, as well as biodegradability and good tensile strength. However, it faces serious challenges, including a high degradation rate and, as a result, a loss of mechanical properties during long periods of exposure to the biological environment. Also, among its other weaknesses, it can be mentioned that it does not deal with bacterial biofilms. It has been found that making composites by synergizing its various components can be an efficient way to improve its properties. Among metal oxide nanoparticles, magnesium oxide nanoparticles (MgO NPs) have distinct physicochemical and biological properties, including biocompatibility, biodegradability, high bioactivity, significant antibacterial properties, and good mechanical properties, which make it a good choice as a reinforcement in composites. However, the lack of comprehensive understanding of the effectiveness of Mg NPs as Mg matrix reinforcements in mechanical, corrosion, and biological fields is considered a challenge in their application. While introducing the role of MgO NPs in medical fields, this article summarizes the most important results of recent research on the mechanical, corrosion, and biological performance of Mg/MgO composites.

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Effects of MgO nano particles on the mechanical properties and corrosion behavior of Mg–Zn–Ca alloy

Cited by 20 publications

References 53 publications

The in vivo and in vitro corrosion behavior of MgO/Mg-Zn-Ca composite with different Zn/Ca ratio

The in vivo and in vitro corrosion behavior of MgO/Mg-Zn-Ca composite with different Zn/Ca ratio

Effect of MgO Contents on the Microstructure, Mechanical Properties and Corrosion Behavior of Low-Alloyed Mg-Zn-Ca Alloy

Recent Advances in Magnesium–Magnesium Oxide Nanoparticle Composites for Biomedical Applications

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