Experimental and theoretical study on the corrosion resistance of Zr–Co–Al–Nb metallic glasses

محورهای موضوعی : Journal of Theoretical and Applied Physics

W. K. Le ¹ , Z. Z. Yuan ² , X. Y. Zhang ³

1 - State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology
2 - State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology
3 - State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology

تاریخ پذیرش : 1395/12/11 تاریخ انتشار : 1395/12/11

کلید واژه: Metallic glasses, corrosion, DOS, First, principles calculation,

چکیده مقاله :

AbstractThe corrosion resistance of (Zr56Al16Co28)100−XNbX(X = 0, 2, 4) metallic glasses in Hanks’ solution were investigated by electrochemical polarization measurements. Polarization curves demonstrate that the addition of niobium into Zr–Co–Al amorphous alloys improves the corrosion resistance. Composition and chemical status of the elements in the passive film were characterized by XPS, and first-principles calculations based on density functional theory (DFT) were  used to analyse the mechanism theoretically.