Magnesium-graphene nano-platelet composites: Corrosion behavior, mechanical and biological properties

Saberi, Abbas; Bakhsheshi-Rad, H.R.; Karamian, Ebrahim; Kasiri‐Asgarani, Masoud; Ghomi, Hamed

doi:10.1016/j.jallcom.2019.153379

Cited by 80 publications

(39 citation statements)

References 53 publications

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“…At the same time, Mg 2+ and Ca 2+ ions and OHions dissolve in the surface and constantly enhance to get through to the solubility degree of apatite in the electrolyte based on the following Equation 3 It was found that there were greater number of cells (stained blue) on TaN and CLT deposited samples compared to the Mg bare alloy. This implies the great biocompatibility of the TaN/CLT deposited samples, whereas the cells cultured on the bare sample failed to adhere and spread well because of its higher dissolution rate, formation of a great amount of corrosion product and high pH value when exposed to the solution [29][30][31][32]. For better assessment of the biocompatibility of the specimens, an MTT assay was additionally conducted.…”

Section: Resultsmentioning

confidence: 99%

Clinoenstatite/Tantalum Coating for Enhancement of Biocompatibility and Corrosion Protection of Mg Alloy

Bakhsheshi‐Rad

Najafinezhad

Hamzah

et al. 2020

JFB

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Biodegradable Mg alloys have appeared as the most appealing metals for biomedical applications, particularly as temporary bone implants. However, issues regarding high corrosion rate and biocompatibility restrict their application. Hence, in the present work, nanostructured clinoenstatite (CLT, MgSiO3)/tantalum nitride (TaN) was deposited on the Mg-Ca-Zn alloy via electrophoretic deposition (EPD) along with physical vapor deposition (PVD) to improve the corrosion and biological characteristics of the Mg-Ca-Zn alloy. The TaN intermediate layer with bubble like morphology possessed a compact and homogenous structure with a thickness of about 950 nm while the thick CLT over-layer (~15 μm) displayed a less compact structure containing nano-porosities as well as nanoparticles with spherical morphology. The electrochemical tests demonstrated that the as prepared CLT/TaN film is able to substantially increase the anticorrosion property of Mg-Ca-Zn bare alloy. Cytocompatibility outcomes indicated that formation of CLT and TaN on the Mg bare alloy surface enhanced cell viability, proliferation and growth, implying excellent biocompatibility. Taken together, the CLT/TaN coating exhibits appropriate characteristic including anticorrosion property and biocompatibility in order to employ in biomedical files.

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Section: Resultsmentioning

confidence: 99%

Clinoenstatite/Tantalum Coating for Enhancement of Biocompatibility and Corrosion Protection of Mg Alloy

Bakhsheshi‐Rad

Najafinezhad

Hamzah

et al. 2020

JFB

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“…This sort of biocompatibility causes this to be an appealing nano-additive phase for MMNCs. In vitro cytotoxicity examinations were performed by Saberi et al [110] and Munir et al [30], and no negative consequences with encapsulation of GNPs in pure Mg and Mg-based matrix, respectively, were found. Mg-based matrix with homogeneously distributed GNPs with lower defect amounts presented a greater level of cell viability ratio (CVR).…”

Section: Cellular Response Of Mg-gfn-based Compositesmentioning

confidence: 98%

“…The SPM approach provides a homogeneous dispersion of the additive phase in the Mg matrix alloy. This method is free of ball milling since ball milling is regarded as a major issue when employing Mg due to the fact that it generates heat, which might burn the Mg powder readily, as exhibited in Figure 11 [110]. Thus, this approach is used as an alternate choice to ball milling, and it has good possibilities regarding the fabrication of a Mg-based composite, which is regarded as a great candidate for engineering purposes.…”

Section: Semi-powder Metallurgymentioning

confidence: 99%

“…Their result exposed the homogeneous distribution of GNPs in the matrix [109]. In this regard, Sabri et al [110] also synthesized a Mg-based composite by SPM, which was encapsulated within GNPs, and their result revealed that homogeneous and even dispersing of the low amount of GNPs inside the Mg-based matrix led to partial agglomeration of GNPs with better mechanical properties. In the same manner, Rashed et al [111] utilized a simple approach to enhance the mechanical properties of Mg-GNP composites by intercalating a small amount of MWCNTs among the layers of GNPs.…”

Section: Semi-powder Metallurgymentioning

confidence: 99%

“…The superior strength of the composites might be caused by fundamental strengthening systems, such as CTE and EL mismatch, Orowan toughening, and stress transfer. In this context, Saberi et al [110] synthesized a Mg-based-GNP composite through the SPM technique with various concentrations of GNPs. Their result presented that strong interfacial bonding was found between GNPs and the Mg-based alloy owing to the presence of residual oxygen in GNPs.…”

Section: Mechanical Properties Of Mg-gnp-based Compositesmentioning

confidence: 99%

See 2 more Smart Citations

Graphene Family Nanomaterial Reinforced Magnesium-Based Matrix Composites for Biomedical Application: A Comprehensive Review

Abazari

Shamsipur

Bakhsheshi‐Rad

et al. 2020

Metals

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Together with the enhancement of the load-bearing implant process for bone substitution and reproduction, an increasing requirement was observed concerning biodegradable magnesium and its alloys with lighter density and outstanding characteristics. Regardless of the current great potential of Mg utilization currently, the broader use of Mg alloys continues to be constrained by several natural causes, such as low resistance of corrosion, inadequate mechanical integrity during the healing process, and poor antibacterial performance. In this perspective, Mg-based composite encapsulated within graphene family nanomaterials (GFNs) such as graphene (Gr), graphene oxide (GO), graphene nanoplatelets (GNPs), and reduced graphene oxide (rGO) as reinforcement agents present great antibacterial activity, as well as cellular response and depicted numerous benefits for biomedical use. Magnesium matrix nanocomposites reinforced with GFNs possess enhanced mechanical properties and high corrosion resistance (low concentration graphene). It is worth noting that numerous elements including the production technique of the Mg-based composite containing GFNs and the size, distribution, and amounts of GFNs in the Mg-based matrix have a crucial role in their properties and applications. Then, the antibacterial mechanisms of GFN-based composite are briefly described. Subsequently, the antibacterial and strengthening mechanisms of GFN-embedded Mg-based composites are briefly described. This review article is designed to wrap up and explore the most pertinent research performed in the direction of Mg-based composites encapsulated within GFNs. Feasible upcoming investigation directions in the field of GFN-embedded Mg-based composites are discussed in detail.

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Mechanical Properties, Degradation Behavior, and Cytocompatibility of Zn–Mg–Graphene Nanoplatelets Composite for Orthopedic‐Implant Applications

Kabir,

Lin,

Munir

et al. 2023

Adv Eng Mater

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Zinc (Zn)‐based materials reveal inadequate mechanical properties as orthopedic biodegradable implantable materials, which limits their biomedical applications. Herein, Zn–xMg (magnesium) composites (x = 0.5, 1.0, 1.5, and 2.0 wt%) reinforced with 0.2 wt% graphene nanoplatelets (GNP) are obtained via powder metallurgy and hot‐pressing sintering. The addition of 0.5–2.0 wt% Mg into Zn–0.2 wt% GNP composite resulted in the formation of Mg2Zn11 and MgZn2 phases without any additional intermetallic carbide phases. The hot‐pressing sintered (HPS) Zn–0.5Mg–0.2GNP composite exhibits a compressive yield strength of 169 ± 18 MPa, an ultimate compressive strength of 270 ± 39 MPa, a compressive strain of 17 ± 6%, and a microhardness of 86 ± 2 HV. Electrochemical corrosion testing reveals that corrosion resistance of HPS Zn–xMg–0.2GNP composites decreases with increasing Mg content, while immersion tests in Hanks’ balanced salt solution for 30 d indicate that the degradation rate increases from 0.032 to 0.141 mm y−1 by increasing Mg content from 0 to 2.0 wt%. In vitro cytotoxicity assessments using SaOS2 human osteoblast cells show >90% viability following exposure over 5 d to 12.5% extract concentrations of all HPS composites. The HPS Zn–0.5Mg–0.2GNP composite exhibits the appropriate material properties for biodegradable bone‐implant applications.

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Magnesium-graphene nano-platelet composites: Corrosion behavior, mechanical and biological properties

Cited by 80 publications

References 53 publications

Clinoenstatite/Tantalum Coating for Enhancement of Biocompatibility and Corrosion Protection of Mg Alloy

Clinoenstatite/Tantalum Coating for Enhancement of Biocompatibility and Corrosion Protection of Mg Alloy

Graphene Family Nanomaterial Reinforced Magnesium-Based Matrix Composites for Biomedical Application: A Comprehensive Review

Mechanical Properties, Degradation Behavior, and Cytocompatibility of Zn–Mg–Graphene Nanoplatelets Composite for Orthopedic‐Implant Applications

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