Fabrication and Properties of Zn-3Mg-1Ti Alloy as a Potential Biodegradable Implant Material

Zhang, Shuo; Yuan, Pengkai; Wang, Xin; Wang, Tiebao; Zhao, Lichen; Cui, Chunxiang

doi:10.3390/ma15030940

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…From Figure 8 b, a non-uniform coarse morphology in Zn 16 Ti is observed. Similarly, from Figure 8 b, the morphology of Zn 11 Mg 2 is evidenced as needle a morphology based on the eutectic reaction between zinc and magnesium (16) . Figure 8 a and b exhibit a homogeneous distribution of the precipitates along with the reinforcement HA and CS along the grain boundaries.…”

Section: Microstructure Analysismentioning

confidence: 58%

Investigation and Synthesis of Biowaste Composite by Squeeze Casting Process: Microstructure Evolution for Biomedical Applications

Ramesh¹,

Ramanathan²,

Vinod³

2023

IJST

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Objectives: To investigate the mechanical and microstructural behaviour of zinc hybrid composites. Zinc alloys are utilized in biomaterial development for implant applications due to their suitable corrosion properties. However, the advantages connected with hybrid reinforcements suggest further research. The objective is to determine the impact of Hydroxyapatite (HA) and Calcium Silicate (CS) derived from biowaste as hybrid reinforcement in Zn-1Mg-0.2Ti alloy. The influence of hybrid reinforcement (HA&CS) was assessed in various weight percentages. Methods: Synthesis of the reinforcement (HA&CS) involved 10h milling and calcination at 1000ºC. Pure Zinc and Zn-1Mg-0.2Ti alloy with 5 wt. % and 10 wt. % (HA and CS) biomaterials were fabricated by the squeeze casting process. Hardness tests of the cast samples were conducted with a 1 kg (Hv) force and a 15-second dwell time. The compressive test was performed as per ASTM E9-19, with a ram speed 0.5mm/min. Findings: Results suggest that, among all three cases, Zn-1Mg-0.2Ti-(2.5 HA / 2.5 CS) composite exhibited favourable mechanical and microstructural properties. The Zn-1Mg-0.2Ti-(5 HA / 5 CS) composite density was 5.52 kg/m 3 , a significant 25% decrease compared to pure zinc metal. The Hardness value of Zn-1Mg-0.2Ti-(2.5 HA / 2.5 CS) was 82Hv, which is 148% increase compared to pure zinc metal (33Hv). The compression tests demonstrated that the Zn-1Mg-0.2Ti-(2.5 HA / 2.5 CS) exhibited the highest ultimate compression strength (364 MPa) and toughness modulus (131 MPa) due to sufficient adherence of the reinforcement with the matrix. Novelty: The novelty of the study was to introduce hybrid reinforcements (HA and CS) in the Zn-1Mg-0.2Ti alloy to increase its hardness and compressive strength. Zn-1Mg-0.2Ti-(2.5 HA / 2.5 CS) is a new hybrid composite compared to recent biomaterials. Furthermore, it can be recommended for implants in orthopaedic surgical applications. https://www.indjst.org/

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Section: Microstructure Analysismentioning

confidence: 58%

Investigation and Synthesis of Biowaste Composite by Squeeze Casting Process: Microstructure Evolution for Biomedical Applications

Ramesh¹,

Ramanathan²,

Vinod³

2023

IJST

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“…The compressive stress-strain curve of the Zn-Ca composite is depicted in Figure 7. Unlike as-cast pure Zn [10,48] and some Zn alloys such as Zn-1Ti [49], Zn-1X (X = Mg, Ca, Sr) [10], Zn-2Mg [50], and Zn-3Cu [50] that have good compressive plasticity, the composite exhibits typical brittle fracture characteristics. Clearly, the result can be attributed to the fact that both the matrix and reinforcing phases of the composite are Zn-Ca compounds.…”

Section: Compressive Mechanical Properties Of the Zn-ca Compositementioning

confidence: 99%

“…The calculated mean compressive strength of the composite is 281.1 ± 55.3 MPa. The compressive strength value is obviously not high among the Zn alloys that also have brittle fracture characteristics (e.g., Zn-3Mg-1Ti alloy with eutectic structure has a compressive strength of 625.1 MPa [49]), which is due to the fact that the specimen is not dense (Figure 5). Since no extensometer was used during the compressive process, the elastic modulus of the specimen was not calculated.…”

Section: Compressive Mechanical Properties Of the Zn-ca Compositementioning

confidence: 99%

Fabrication and Properties of a Biodegradable Zn-Ca Composite

Zhang,

Wang,

Zhang

et al. 2023

Materials

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In recent years, Zn and its alloys have become some of the most promising degradable metals as in vivo implants due to their acceptable biocompatibility and more suitable degradation rate compared with Mg-based and Fe-based alloys. However, the degradation rate of Zn-based materials after implantation in the body for orthopedic applications is relatively slow, leading to long-term retention of the implants after fulfilling their missions. Moreover, the excessive release of Zn2+ during the degradation process of Zn-based implants usually leads to high cytotoxicity and delayed osseointegration. To provide a feasible solution to the problem faced by Zn-based implants, a Zn-Ca composite was fabricated by an air pressure infiltration method in this work. The XRD pattern of the composite suggests that the composite is fully composed of Zn-Ca intermetallic compounds. The degradation tests in vitro show that the composite has a much higher degradation rate than pure Zn, and the high Ca content regions in the composite can preferentially degrade as sacrificial anodes. In addition, the composite can efficiently induce Ca-P deposition during immersion tests in Hank’s solution. Cytotoxicity tests indicate that L-929 cells exhibit around 82% cell viability (Grade 1) even after being cultured in the 100% extract prepared from the Zn-Ca composite for 1 day and show excellent cell viability.

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Characterization of novel zinc-hydroxyapatite/wollastonite composite synthesized from biowaste for biodegradable orthopedic implant applications

Ramesh

Ramanathan

Ramesh

et al. 2023

Biomass Conv. Bioref.

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Fabrication and Properties of Zn-3Mg-1Ti Alloy as a Potential Biodegradable Implant Material

Cited by 5 publications

References 51 publications

Investigation and Synthesis of Biowaste Composite by Squeeze Casting Process: Microstructure Evolution for Biomedical Applications

Investigation and Synthesis of Biowaste Composite by Squeeze Casting Process: Microstructure Evolution for Biomedical Applications

Fabrication and Properties of a Biodegradable Zn-Ca Composite

Characterization of novel zinc-hydroxyapatite/wollastonite composite synthesized from biowaste for biodegradable orthopedic implant applications

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