-1增加到0.9 g·L-1,膜層的疏水性和硬度隨之提高。通過SEM/EDS和XPS表征,驗(yàn)證了石墨烯在Cu-GR膜層中的均勻分散以及Cu-GR復(fù)合材料的組成。利用動電位極化曲線和電化學(xué)阻抗譜(EIS)研究了Cu-GR復(fù)合鍍層的電化學(xué)性能。結(jié)果表明,石墨烯的加入使膜層的電化學(xué)性能更加穩(wěn)定、耐蝕性得到提高。當(dāng)電沉積液中石墨烯添加濃度為0.3 g·L-1時(shí),獲得的Cu-GR復(fù)合包覆層在NdFeB基體上表現(xiàn)出最優(yōu)的綜合保護(hù)效果。;Corrosion resistance of rare earth permanent magnet material NdFeB was achieved by electrodeposited Cu-graphene (Cu-GR) composite films. The impact of the films on corrosion performances was studied by examining the morphology, water contact angle, and surface microhardness. The results show that the hydrophobicity and the hardness are enhanced as the concentration of graphene in the plating solution increases from 0 g·L-1 to 0.9 g·L-1. The characterization through SEM/EDS and XPS verifies the uniform dispersion of graphene sheets in the electrodeposited coating and the composition of Cu-GR composites. The electrochemical performance of the Cu-GR composite coating was investigated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS), and it is demonstrated that the electrochemical performance becomes more stable and the corrosion resistance is improved with the addition of graphene in the composites. For the sintered NdFeB samples coated with Cu-GR composite films with different graphene concentrations the best protective effect is obtained for the film prepared from the plating solution with a graphene concentration of 0.3 g·L-1."/>
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