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| 1 | Effect of graphene oxide on the corrosion,mechanical and biological properties of Mg-based nanocomposite显示文摘This study investigates the effect of graphene oxide(GO)on the mechanical and corrosion behavior,antibacterial performance,and cell response of Mg–Zn–Mn(MZM)nanocomposite.MZM/GO nanocomposites with different amounts of GO(i.e.,0.5 wt%,1.0 wt%,and1.5 wt%)were fabricated by the semi-powder metallurgy method.The influence of GO on the MZM nanocomposite was analyzed through the hardness,compressive,corrosion,antibacterial,and cytotoxicity tests.The experimental results showed that,with the increase in the amount of GO(0.5 wt%and 1.5 wt%),the hardness value,compressive strength,and antibacterial performance of the MZM nanocomposite increased,whereas the cell viability and osteogenesis level decreased after the addition of 1.5 wt%GO.Moreover,the electrochemical examination results showed that the corrosion behavior of the MZM alloy was significantly enhanced after encapsulation in 0.5 wt%GO.In summary,MZM nanocomposites reinforced with GO can be used for implant applications because of their antibacterial performance and mechanical property. | Saeid Jabbarzare Hamid Reza Bakhsheshi-Rad Amir Abbas Nourbakhsh Tahmineh Ahmadi Filippo Berto | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，2： | 2 |
| 2 | Electrochemically functionalized graphene as an anti-corrosion reinforcement in Cu matrix composite thin films显示文摘Cu-graphene(Gr)composite thin films were prepared by electrodeposition route using in-house synthesized Gr sheets.The Gr sheets were synthesized by the electrochemical exfoliation route using 1 M HClO4 acid as electrolyte.The Gr sheets were confirmed by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),field-emission scanning electron microscopy(FESEM),and transmission electron microscopy(TEM).The(002)plane of Gr sheets was observed at 2θof 25.66°.The(002)plane confirmed the crystal structure of car-bon peaks.The stretching vibration of C=C bond at a wavelength of 1577 cm^(−1) and other functional groups of carboxyl and epoxide groups were observed from FTIR.TEM confirmed the transparent structure of Gr sheets.The prepared Gr sheets were used as reinforcement at con-centrations of 0.1 and 0.3 g/L with a copper matrix to synthesize the Cu-Gr composite.The prepared composite thin films were characterized by XRD,SEM,and energy-dispersion spectrometry(EDS)for morphological and analytical studies.The presence of Gr sheets in Cu-Gr com-posite was confirmed by EDS analysis.The prepared Cu-Gr nanocomposite thin film showed higher corrosion resistance compared with pure copper thin films in 3.5wt%NaCl,as confirmed by Tafel plots.Electrochemical impedance spectroscopy complimented the above results and showed that 0.3 g/L composite film achieved the highest film resistance. | Akhya kumar Behera Amlan Das Sanjeev Das Archana Mallik | 2021 | International Journal of Minerals,Metallurgy and Materials2021，28，9： | 0 |
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