Electrochemically functionalized graphene as an anti-corrosion reinforcement in Cu matrix composite thin films  

作　　者：Akhya kumar Behera Amlan Das Sanjeev Das Archana Mallik 

机构地区：[1]Electrometallurgy and Corrosion Laboratory(Research),Department of Metallurgical and Materials Engineering,National Institute of Technology,Rourkela 769008,Odisha,India [2]Advanced Metal Casting Laboratory,Department of Metallurgical and Materials Engineering,National Institute of Technology,Raipur 492010,Chhatisgarh,India

出　　处：《International Journal of Minerals,Metallurgy and Materials》2021年第9期1525-1533,共9页矿物冶金与材料学报（英文版）

基　　金：The authors gratefully acknowledge the partial financial support of this work by the Department of Science and Technology(DST)India via grant number EEQ/2018/001452 and National Institute of Technology,Rourkela,India for the financial and infrastructure support.

摘　　要：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.

关 键 词：GRAPHENE NANOCOMPOSITE ELECTRODEPOSITION copper 

分 类 号：TG174.4[金属学及工艺—金属表面处理]