Synthesis and characterization of biodegradable AZ31/calcium phosphate glass composites for orthopedic applications

Mokhtari, Sahar; Yekta, B. Eftekhari; Marghussian, V.K.; Ahmadi, Pooya Torab

doi:10.1007/s42114-020-00177-x

Cited by 20 publications

(11 citation statements)

References 42 publications

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“…It was also observed that there is no clustering of reinforcing particles in any region. It has been determined that the production method (PM method) is considerably effective in obtaining a homogeneous microstructure, both in the present study and in other literature studies [10,47,50]. With the increasing rate of reinforcement, the amount of Al2O3 particles at the grain boundaries increases and the grain sizes are generally smaller.…”

Section: Sem and Eds Analysis Of Specimens Before Immersionmentioning

confidence: 52%

“…Although Mg-based biomaterials have biodegradable properties in in-body applications [8,9], they also contain some basic elements (Mg, Zn, Sn, Ca, etc.) needed by the body [10,11]. Moreover, the density and elasticity modulus values of pure Mg exhibit properties quite close to those of human bones [12].…”

Section: Introductionmentioning

confidence: 65%

“…Apatite structures fill the cracks where H 2 gas is evolved and serve as a kind of coating on the specimen surface. According to the findings reported in the literature [10,15], the apatite structures significantly improve the corrosion resistance. In the present study, it is thought that the corrosion properties of the specimen (I) with apatite structure are better.…”

Section: Corrosion Properties Of Mg2zn-xal 2 O 3 Compositesmentioning

confidence: 84%

“…When the temporary Mg(OH) 2 film layer formed on the specimen surface remains for a longer period without leaving the surface, it is expected to react according to Equation ( 7) [15,55]. After this reaction, the reaction in Equation ( 8) is also expected to occur, and permanent and protective apatite structures are formed on the surface [10]. When the Figure 7b was examined, it was determined by EDS elemental analysis that the reactions stated in Equations ( 7) and ( 8) took place mostly on the surface of the specimen (I) containing 2 wt.% Al 2 O 3 .…”

Section: Corrosion Properties Of Mg2zn-xal 2 O 3 Compositesmentioning

confidence: 99%

“…However, for some applications, Mg alloys may still be insufficient. Therefore, studies on the production of Mg matrix composites have also gained momentum [10,30,33]. In the production of Mg matrix composites, two important issues should be considered in the selection of the reinforcement to be added.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Erçetin

Pimenov

2021

Materials

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Powder metallurgy (PM) method is one of the most effective methods for the production of composite materials. However, there are obstacles that limit the production of magnesium matrix composites (MgMCs), which are in the category of biodegradable materials, by this method. During the weighing and mixing stages, risky situations can arise, such as the exposure of Mg powders to oxidation. Once this risk is eliminated, new MgMCs can be produced. In this study, a paraffin coating technique was applied to Mg powders and new MgMCs with superior mechanical and corrosion properties were produced using the hot pressing technique. The content of the composites consist of an Mg2Zn matrix alloy and Al2O3 particle reinforcements. After the debinding stage at 300 °C, the sintering process was carried out at 625 °C under 50 MPa pressure for 60 min. Before and after the immersion process in Hank’s solution, the surface morphology of the composite specimens was examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis. With the hot pressing technique, composite specimens with a very dense and homogeneous microstructure were obtained. While Al2O3 reinforcement improved the mechanical properties, it was effective in changing the corrosion properties up to a certain extent (2 wt.% Al2O3). The highest tensile strength value of approximately 191 MPa from the specimen with 8 wt.% Al2O3. The lowest weight loss and corrosion rate were obtained from the specimen containing 2 wt.% Al2O3 at approximately 9% and 2.5 mm/year, respectively. While the Mg(OH)2 structure in the microstructure formed a temporary film layer, the apatite structures containing Ca, P, and O exhibited a permanent behavior on the surface, and significantly improved the corrosion resistance.

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Section: Sem and Eds Analysis Of Specimens Before Immersionmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 65%

Section: Corrosion Properties Of Mg2zn-xal 2 O 3 Compositesmentioning

confidence: 84%

Section: Corrosion Properties Of Mg2zn-xal 2 O 3 Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Erçetin

Pimenov

2021

Materials

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Development of 3D-Printed PCL/ Baghdadite Nanocomposite Scaffolds for Bone Tissue Engineering Applications

Emadi,

Baghani,

Khodaei

et al. 2024

J Polym Environ

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A signi cant obstacle in bone tissue engineering is the creation of biodegradable bone replacements with the requisite mechanical and biological capabilities to treat more severe and intricately shaped injuries.Baghdadite has recently indicated that active biological ions such as silicon (Si 4+ ) and zirconium (Zr 4+ ) have been proven to increase bone growth considerably. In this study, we produced 3D-printed PCL-based scaffolds containing different amounts of Baghdadite using the robocasting solvent technique. Notably, PCL with 40 and 60 wt.% Baghdadite scaffolds (PB40 and PB60) promoted a more biomimetic environment for in vitro bone growth as their proper bioactivity and cell viability results were obtained without the addition of osteoinductive components. The printing process produced 3D scaffolds with a compressive strength of 7.94 MPa and elastic modulus of 29.95 MPa in PB40. According to the analytical prediction models in PB40, the elastic modulus was 24.7 and 26.89 MPa. Also, adding 60 wt.% Baghdadite increased the degradation rate to 5.1% in two months, more than six times that of PCL-based scaffolds. Cell proliferation assay demonstrated that the optical density of MG63 cells after 7 days of culture increased from 1.43 ± 0.03 to 1.82 ± 0.20 in PB40 as compared to pure PCL scaffold. Furthermore, bioactivity evaluation, ion release assessment, and morphological observation results further revealed that incorporating Baghdadite into a 3D-printed PCL-based scaffold could improve bone regeneration.Our ndings demonstrate that the PCL/Baghdadite composite scaffold may be e ciently manufactured using 3D-printing technology and is extremely promising for bone tissue engineering applications.

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Microstructure, Mechanical, and Electrochemical Corrosion Performance of Ti/HA (Hydroxyapatite) Particles Reinforced Mg-3Zn Squeeze Casted Composites

Vignesh

Ramanathan

Mohankumar³

et al. 2023

Inter Metalcast

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Synthesis and characterization of biodegradable AZ31/calcium phosphate glass composites for orthopedic applications

Cited by 20 publications

References 42 publications

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Microstructure, Mechanical, and Corrosion Behavior of Al2O3 Reinforced Mg2Zn Matrix Magnesium Composites

Development of 3D-Printed PCL/ Baghdadite Nanocomposite Scaffolds for Bone Tissue Engineering Applications

Microstructure, Mechanical, and Electrochemical Corrosion Performance of Ti/HA (Hydroxyapatite) Particles Reinforced Mg-3Zn Squeeze Casted Composites

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