Preparation of novel Zn/Gr MMC using a modified electro-co-deposition method: Microstructural and tribo-mechanical properties

Owhal, Ayush; Pingale, Ajay D.; Belgamwar, Sachin U.; Rathore, Jitendra S.

doi:10.1016/j.matpr.2020.09.459

Cited by 11 publications

(2 citation statements)

References 36 publications

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“…The XRD spectrum of the as‐received GNP showed a peak at 2 θ = 26.5°, which is related to the (002) planes of GNP (Figure 4a), while diffraction peaks from (002), (100), (101), (102), (103), (110), (004), (112), (201), and (200) reflection planes correspond to the pure Zn and confirms the hexagonal closed packed structure of pure Zn. [ 76 ] The XRD patterns of Zn– x Mg–0.2GNP BMPMs revealed less intense additional Mg diffraction peaks at 2 θ of 34.4°, 47.5°, and 62.9°, showing the attendance of Mg in the BMPMs (Figure 4b). However, in Figure 4b, diffraction peaks related to GNP were not observed, which could be owing to the lower weight percent (0.2%) of GNP in the ball milled powder mixtures.…”

Section: Resultsmentioning

confidence: 99%

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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Section: Resultsmentioning

confidence: 99%

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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“…Surface and working fluid modification techniques have been exploited to improve pool boiling performance [9][10][11][12][13]. Various modification techniques used to develop heating surfaces are suitable in pool BHT applications such as RF sputtering, electrodeposition, sintering, soldering, spray painting, binding, microporous coatings and dip coating [14][15][16][17][18][19][20]. Porous coatings have gained significant attention because of their capacity to provide high surface area, nucleation site density and wettability that improve the vapor entrapment [21][22][23][24].This study focuses on modifying the plain copper heating surface through a two-stage electrodeposition technique.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Pool BHT Performance of R-141b on Micro/Nano-Porous Copper Coating Prepared by a Two-stage Electrodeposition Method

Katarkar¹,

Pingale²,

Belgamwar³

et al. 2021

Preprint

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Pool boiling heat transfer (BHT) of R-141b on porous Cu coated heating surface was experimentally studied. Porous Cu coating was fabricated on a plain Cu heating surface through a two-stage electrodeposition method. Surface characterization of Cu coating confirmed the successful synthesis of micro/nano-porous Cu coating. Experimental results showed that the Cu coated heating surface introduced a significant enhancement in heat transfer coefficient (HTC) and a great reduction in wall superheat compared to the plain Cu surface. The maximum enhancement in HTC for the Cu coated heating surface was approximately 53% compared to the uncoated heating surface. This is believed to have resulted from the increase in active surface area, nucleation site density and cavitation activity owing to the microporous structure of Cu coating. Obtained results showed that the microporous Cu coated heating surface could be employed in modern heat transfer applications.

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Microstructures, mechanical and corrosion properties of graphene nanoplatelet–reinforced zinc matrix composites for implant applications

et al. 2023

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Preparation of novel Zn/Gr MMC using a modified electro-co-deposition method: Microstructural and tribo-mechanical properties

Cited by 11 publications

References 36 publications

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

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

Experimental Investigation of Pool BHT Performance of R-141b on Micro/Nano-Porous Copper Coating Prepared by a Two-stage Electrodeposition Method

Microstructures, mechanical and corrosion properties of graphene nanoplatelet–reinforced zinc matrix composites for implant applications

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