Effect of Sr addition on microstructure evolution and mechanical properties of Zn 4%Al hypoeutectic alloy

Liu, Yang; Geng, C.; Zhu, Yunke; Xu, Chunye

doi:10.1016/j.jallcom.2016.11.096

Cited by 19 publications

(6 citation statements)

References 30 publications

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“…In this work, it was presented that the amount of Zn 2+ ions below 100.8 μM (11.4 mg/L) in pure Zn, 98.2 μM (11.1 mg/L) in the Zn‐3Ag alloy, and 118.5 μM (13.4 mg/L) in the Zn‐3Ag‐0.5Mg provide a favorable environment for cell survival and proliferation. This result is consistent with other already mentioned results for Zn‐based materials 45,62,68–71 . Furthermore, it can be seen that in the current study, the chemical composition variations of the investigated samples revealed almost no significant differences.…”

Section: Discussionsupporting

confidence: 93%

“…This result is consistent with other already mentioned results for Zn‐based materials. 45 , 62 , 68 , 69 , 70 , 71 Furthermore, it can be seen that in the current study, the chemical composition variations of the investigated samples revealed almost no significant differences. These results are important, as it was mentioned that the use of these alloying additions is necessary to strengthen pure Zn, while simultaneously not deteriorating the biological properties of pure Zn.…”

Section: Discussionsupporting

confidence: 44%

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In vitro cytocompatibility and antibacterial studies on biodegradable Zn alloys supplemented by a critical assessment of direct contact cytotoxicity assay

et al. 2022

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In vitro cytotoxicity assessment is indispensable in developing new biodegradable implant materials. Zn, which demonstrates an ideal corrosion rate between Mg-and Fe-based alloys, has been reported to have excellent in vivo biocompatibility. Therefore, modifications aimed at improving Zn's mechanical properties should not degrade its biological response. As sufficient strength, ductility and corrosion behavior required of load-bearing implants has been obtained in plastically deformed Zn-3Ag-0.5Mg, the effect of simultaneous Ag and Mg additions on in vitro cytocompatibility and antibacterial properties was studied, in relation to Zn and Zn-3Ag. Direct cell culture on samples and indirect extract-based tests showed almost no significant differences between the tested Zn-based materials. The diluted extracts of Zn, Zn-3Ag, and Zn-3Ag-0.5Mg showed no cytotoxicity toward MG-63 cells at a concentration of ≤12.5%. The cytotoxic effect was observed only at high Zn 2+ ion concentrations and when in direct contact with metallic samples. The highest LD 50 (lethal dose killing 50% of cells) of 13.4 mg/L of Zn 2+ ions were determined for the Zn-3Ag-0.5Mg. Similar antibacterial activity against Escherichia coli and Staphylococcus aureus was observed for Zn and Zn alloys, so the effect is attributed mainly to the released Zn 2+ ions exhibiting bactericidal properties. Most importantly, our experiments indicated the limitations of water-soluble tetrazolium salt-based cytotoxicity assays for direct

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 44%

In vitro cytocompatibility and antibacterial studies on biodegradable Zn alloys supplemented by a critical assessment of direct contact cytotoxicity assay

et al. 2022

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“…Consequently, the corrosion sensitivity of the galvanic microbattery is increased, leading to accelerated corrosion and the formation of internal aggregates. [40,41] Similarly, the presence of the SrZn13 phase, acting as an active intermediate with a low equilibrium potential, [42] has been observed to promote microgalvanic corrosion, as reported in previous studies. [43,44] The involvement of the SrZn13 phase in galvanic corrosion processes further contributes to the degradation of the material.…”

Section: Immersed Corrosion Measurementssupporting

confidence: 65%

Influence of Sr and Mn Elements on the Microstructural Characteristics, Mechanical, and Anticorrosion Properties of Zn‐Based Biodegradable Materials

Wang,

Yu,

Jung

2023

Adv Eng Mater

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This study specifically focused on investigating the effects of Mn and Sr additions on the microstructure, mechanical properties, and anti‐corrosion behavior of as‐extruded Zn‐Mn‐Sr alloys, with the ultimate goal of developing biodegradable implants. The microstructural observations revealed that the incorporation of Mn and Sr elements played a crucial role in refining the hcp (Zn) grains within the alloys. Moreover, intermetallic phase SrZn13 were observed to precipitate along with the eutectic microstructure. These microstructural changes contributed to the overall mechanical properties of the alloys. Mechanical testing demonstrated that increasing the Sr content in the alloys resulted in improved strength. Thus, the addition of Sr showed the potential to enhance the mechanical properties of Zn‐Mn alloys, but it also resulted in a trade‐off with ductility. Notable alloys, BZA920, exhibited the highest values of yield strength (YS) at 219.8 ± 5.2 MPa and ultimate tensile strength (UTS) at 240.6 ± 4.3 MPa；alloys of BZA315, BZA615, and BZA915 exhibited excellent ductility of over 40%. These enhanced mechanical properties were attributed to the grain refinement and lattice distortion induced by the presence of Mn and Sr. The electrochemical and immersion tests conducted in simulated body fluid (SBF) solution demonstrated the alloys’ favorable corrosion resistance. The corrosion rates ranged from 0.05 to 0.15 mm/year, indicating their potential suitability as implant materials. Overall, this study highlighted the exceptional mechanical properties, favorable corrosion resistance, and excellent biocompatibility of the investigated Zn‐Mn‐Sr alloys, which positions Zn‐Mn‐Sr alloys as highly promising candidates for biodegradable implants.This article is protected by copyright. All rights reserved.

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“…Literature analysis confirms that microstructure shaping has a significant impact on the properties of pressure casting. [9,12,18]. The reason for the cast porosity may be due to the mold's structure or pressure casting parameters.…”

Section: Discussionmentioning

confidence: 99%

Defects analysis of seat belt tensioner cast body

2020

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The article presents an analysis of the implementation of a selected element of the traveler safety system used in road transport. The results of metallographic tests were presented, and the state of stress introduced to the casting by means of forming the element by means of plastic forming was analyzed. An analysis of the manufacturing process was carried out indicating the risks that may lead to cracks in the material structure. Possible causes of founding defects were pointed out and possible technological solutions were pointed out in order to avoid them.

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Effect of Sr addition on microstructure evolution and mechanical properties of Zn 4%Al hypoeutectic alloy

Cited by 19 publications

References 30 publications

In vitro cytocompatibility and antibacterial studies on biodegradable Zn alloys supplemented by a critical assessment of direct contact cytotoxicity assay

In vitro cytocompatibility and antibacterial studies on biodegradable Zn alloys supplemented by a critical assessment of direct contact cytotoxicity assay

Influence of Sr and Mn Elements on the Microstructural Characteristics, Mechanical, and Anticorrosion Properties of Zn‐Based Biodegradable Materials

Defects analysis of seat belt tensioner cast body

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