Characteristics and Surface Serviceability for Cryogenic Milling Mg-1.6Ca-2.0Zn Medical Magnesium Alloy

Guo, Xuan; Liu, Guodong; Sang, Shunheng; Lin, Qichao; Qiao, Yang

doi:10.3390/jfb13040179

Cited by 4 publications

(1 citation statement)

References 24 publications

(23 reference statements)

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“…Therefore, it also accelerates the generation of osteoblasts and new bone around the damaged tissue, thus promoting the healing of the damaged tissue. As a result, in the field of medical biomaterials, magnesium alloys have attracted the attention of researchers [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Effects of supersonic fine particle bombardment on the microstructure and properties of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy

Huai¹,

Wang²,

Wang³

et al. 2023

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With the help of supersonic fine particle bombardment technology, a gradient nanostructure with a certain layer depth was constructed on the surface of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy. The effects of bombardment time on the microstructure, mechanical properties, and corrosion resistance of the gradient nanostructure were investigated. The results showed that the layer depth and surface roughness of the gradient nanostructures increased with an increase in the bombardment time, and the corresponding mechanical properties and corrosion resistance first increased and then decreased with an extension of the bombardment time. When the bombardment time was 30 s, the alloy had good mechanical properties and corrosion resistance. Its tensile strength, yield strength, elongation, and static corrosion rate were 299.1 ± 2.2 MPa, 264.4 ± 1.5 MPa, 36.8 ± 1.3 %, and 0.307 ± 0.015 mm y −1 , respectively. The results of the 120-h immersion experiment in simulated human body fluids showed that the average corrosion rate of the alloy first decreased, then increased, and finally decreased with an extension of the immersion time and finally tended to stabilize.

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Section: Introductionmentioning

confidence: 99%

Effects of supersonic fine particle bombardment on the microstructure and properties of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy

Huai¹,

Wang²,

Wang³

et al. 2023

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Effect of Sn on the microstructure and properties of biodegradable Mg-1.0Zn-0.3Zr magnesium alloy

Zhao,

Li,

Yan

et al. 2024

Mater. Res. Express

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In order to prepare a new biodegradable magnesium alloy with high biosafety, better mechanical properties, and lower degradation rate, in this paper, the effect of the non-toxic element Sn (0%~2%, mass%) on the microstructure, mechanical properties, and corrosion resistance of the Mg-1.0Zn-0.3Zr alloy was investigated using optical microscopy, scanning electron microscopy, X-ray diffraction, tensile testing, and corrosion experiments. The results indicated that the addition of Sn to the alloy resulted in the formation of the Mg2Sn phase, which improved the mechanical properties of the alloy. However, a higher concentration of this phase and its continuous distribution along the grain boundaries decreased the alloy’s corrosion resistance. The mechanical properties and corrosion resistance of the alloy exhibited an increasing trend with the increase of Sn content, followed by a decreasing trend. At an Sn content of 1%, the alloy demonstrated better mechanical properties and corrosion resistance simultaneously. The yield strength, tensile strength, and elongation of the alloy were 114±2 MPa, 164±5 MPa, and 13.3±0.1%, respectively. Additionally, the corrosion rate of the alloy was only 0.61 mm/y after being immersed in simulated body fluids for 120 h. These properties represent a significant improvement over those of the Mg-1.0Zn-0.3Zr alloy. Our results indicate that the addition of an appropriate amount of Sn element can improve both the mechanical properties and corrosion resistance of the alloy, supporting the development of new biodegradable magnesium alloys.

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Effect of Coating Treatment on the Properties of Extruded Mg-1.0Zn-0.3Zr-1.0Y-2.0Sn Alloys

He,

Gao,

Wen

et al. 2024

Coatings

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The impact of fluoride-based coatings on the microstructure and mechanical integrity of extruded Mg-1.0Zn-0.3Zr-1.0Y-2.0Sn alloys was assessed utilizing optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), immersion testing, electrochemical analysis, and tensile testing. It was observed that the magnesium alloys could be immersed in hydrofluoric acid (HF) for varying durations to achieve coatings of distinct thicknesses, with the coating thickness stabilizing at approximately 8 μm after a 48 h immersion period. The application of the fluoride coating significantly enhanced the corrosion resistance of the alloys, with a corrosion rate (CRH) of 0.13 ± 0.012 mm/y. Upon a 20-day immersion in simulated body fluid (SBF), the degradation rates of the yield strength (YS), tensile strength (UTS), and elongation (EL) for the cast alloys were recorded as 62%, 59%, and 64%, respectively. For the extruded alloys, these rates escalated to 77%, 76%, and 95%. In contrast, the fluorine-coated alloys exhibited significantly lower degradation rates of 28%, 23%, and 39% after a 25-day immersion in SBF. Upon extrusion, the specimens exhibit a diminished corrosion resistance and a more substantial decline in mechanical properties compared to their as-cast state. Upon the application of the coating, there is a discernible reduction in the rate of mechanical property degradation observed in the specimens. This indicates that the fluorinated coating can mitigate the corrosion rate and enhance the corrosion resistance of magnesium alloys.

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Characteristics and Surface Serviceability for Cryogenic Milling Mg-1.6Ca-2.0Zn Medical Magnesium Alloy

Cited by 4 publications

References 24 publications

Effects of supersonic fine particle bombardment on the microstructure and properties of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy

Effects of supersonic fine particle bombardment on the microstructure and properties of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy

Effect of Sn on the microstructure and properties of biodegradable Mg-1.0Zn-0.3Zr magnesium alloy

Effect of Coating Treatment on the Properties of Extruded Mg-1.0Zn-0.3Zr-1.0Y-2.0Sn Alloys

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