In vitro and in vivo studies on magnesium alloys to evaluate the feasibility of their use in obstetrics and gynecology

Guo, Bao; Fan, Qianqian; Ge, Dongfeng; Sun, Min; Guo, Hui; Xia, Dandan; Liu, Yang; Liu, Jianing; Wu, Shangchun; He, Bin; Zheng, Yufeng

doi:10.1016/j.actbio.2019.08.001

Cited by 25 publications

(5 citation statements)

References 60 publications

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“…34,35 In vivo measurements also showed that Mg-Zn-Ca alloys did not have toxic effects on the metabolism. 36 From the results obtained in the present study and data reported in literature, it is clear that Mg-based alloys can be tailored by variation of the chemical composition and the use of appropriate coatings to achieve a broad range of degradation rates. However, the long-term effects of accumulation of foreign elements in the degradation layer remain unclear.…”

Section: Discussionsupporting

confidence: 56%

Magnesium Alloys for Open-Pored Bioresorbable Implants

Maier

Julmi

Behrens

et al. 2020

JOM

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If bone defects occur, the body's own healing mechanism can close them below a critical size; for larger defects, bone autografts are used. These are typically cut from the same person's hip in a second surgery. Consequently, the risk of complications, such as inflammations, rises. To avoid the risks resulting from the second surgery, absorbable, open-pored implants can be used. In the present study, the suitability of different magnesium alloys as absorbable porous bone substitute material has been investigated. Using the investment casting process with its design flexibility, the implant's structure can be adapted to the ideal pore geometry with respect to bone ingrowth behavior. Different magnesium alloys (Mg-La2, LAE442, and ZX61) were studied and rated in terms of their degradation rate, bone ingrowth behavior, biocompatibility, and resorbability of the individual alloying elements.

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Section: Discussionsupporting

confidence: 56%

Magnesium Alloys for Open-Pored Bioresorbable Implants

Maier

Julmi

Behrens

et al. 2020

JOM

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“…Indeed, the two phases have structural relationships leading to very similar diffractograms. Like us, several authors have reported similar diffractograms for samples qualified as Ag 3 Sn or the ζ phase (Ag 4 Sn) on the basis of EDX analysis [41,42].…”

Section: Discussionsupporting

confidence: 56%

The Polyol Process and the Synthesis of ζ Intermetallic Compound Ag5Sn0.9

et al. 2022

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The present work concerns the intermetallic compound (IMC) existing in the Ag–Sn system and its potential use in electronics as attachment materials allowing the adhesion of the chip to the substrate forming the power module. First, we present the synthesis protocol in polyol medium of a compound with the chemical formula Ag5Sn0.9 belonging to the solid solution of composition located between 9 and 16 at.% Sn, known as solid solution ζ (or ζ-Ag4Sn). This phase corresponds to the peritectic invariant point at 724 °C. Differential thermal analysis and X-ray dispersive analysis confirm the single-phased (monocrystalline) nature of the Ag5Sn0.9 powder issued after synthesis. Scanning electron microscopy shows that Ag5Sn0.9 particles are spherical, and range in submicronic size of around 0.18 μm. X-ray diffraction analysis reveals that the ζ phase mostly exists under the two allotropic varieties (orthorhombic symmetry and hexagonal symmetry) with however a slight excess of the hexagonal variety (60% for the hexagonal variety and 40% for the orthorhombic variety). The lattice parameters resulting from this study for the two allotropic varieties are in good agreement with the Hume-Rothery rules.

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“…Aluminum nanoalloys (Al-Mg) have been the principle compounds applied for airframe structures until the enhancing tendency in the application of composites of the polymer matrix. Aluminum-Mg nanoalloys are thinner than further aluminum nanoalloys and much less fulminant than other nanoalloys consisting of large values of Mg. Aluminum-Si is one of the most significant aluminum nanoalloys with vast contents of Si in foundry and has a great finiteness of usages in the air activities through a best mixture of micromechanical economy [1][2][3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Carbenes trapping on Aluminum-Magnesium surface implanted with Silicon, Germanium, Tin: Promising of semiconductors by molecular modeling approach

Mollaamin,

Monajjemi

2023

Appl. Chem. Eng.

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Al-Mg surface doped silicon, germanium and tin is theoretically studied using first-principles density functional theory (DFT) at the CAM-B3LYP/EPR-III, LANL2DZ,6-31+G(d,p) level of theory to explore the chemical adsorption and corrosion inhibition of organic carbenes through coating process. The fluctuation of NQR is estimated the inhibiting role of pyridine and its derivatives (picoline, 3-picoline,4-picoline,2,4-lutidine) for (Si, Ge, Sn)-doped Al-Mg alloy nanosheet due to concerning nitrogen in the benzene ring of related heterocyclic compounds becoming close to the monolayer nanosurface of Al-Mg-X (X = Si, Ge, Sn) nanoalloys. The NMR spectroscopy remarks that (Si, Ge, Sn)-doped Al-Mg alloy nanosheet has maximum band wavelengths approximately between 10 ppm–2000 ppm accompanying the sharpest peaks for inhibitors → Al-Mg-X which are between 10 ppm–100 ppm. IR spectroscopy has exhibited that (Si, Ge, Sn)-doped Al-Mg alloy nanosheet with the fluctuation in the frequency of intra-atomic interaction leads us to the most influence in the vicinage atoms generated due to inter-atomic interaction. The maximum IR spectrum for complexes of [inhibitor → Al-Mg-X (X = Si, Ge, Sn)] is observed in the frequency range between 500 cm−1–3500 cm−1. This work exhibits that proper monitoring of the coating mechanism by Langmuir adsorption can illustrate inhibiting the aluminum nanoalloys corrosion through an investigation of their structural and thermodynamic properties. This work investigates the characteristics, band structure, and projected density of state (PDOS) of Al-Mg nanoalloy doped with Si, Ge, Sn elements for increasing the corrosion inhibition of the surface through adsorption of organic molecules of carbenes in the surface coatings process. This article can be helpful in a range of applications which uses Al-Mg alloy for the study of energy storage and adsorption of air pollution or water contamination. Many different approaches such as surface coatings, alloying and doping can be adopted to protect the surface.

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In vitro and in vivo studies on magnesium alloys to evaluate the feasibility of their use in obstetrics and gynecology

Cited by 25 publications

References 60 publications

Magnesium Alloys for Open-Pored Bioresorbable Implants

Magnesium Alloys for Open-Pored Bioresorbable Implants

The Polyol Process and the Synthesis of ζ Intermetallic Compound Ag5Sn0.9

Carbenes trapping on Aluminum-Magnesium surface implanted with Silicon, Germanium, Tin: Promising of semiconductors by molecular modeling approach

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