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Effects of Y Alloying on Thermal Stability and Corrosion Resistance of Cu-Zr-Al Metallic Glass

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Abstract:

The (Cu50Zr45Al5)100-XYX(x=0, 1, 2, and 3) alloys samples were prepared by copper mold suction casting method. The effect of the addition of Y on the structure, glass-forming ability, thermal stability and corrosion behaviors of the base BMG (Cu50Zr45Al5) were investigated by means of XRD, DSC, DTA and electrochemical polarization. The results showed that Cu10Zr7 and Zr2Cu phases are precipitated when Y addition exceeds 3at%, otherwise the alloys are fully amorphous state. Minor addition Y improved the thermal stability of the base alloy. The corrosion resistance of BMG alloy is deteriorated in 3.5% NaCl solution with addition of Y element as indicated by the corrosion potential and corrosion current density.

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Periodical:

Advanced Materials Research (Volumes 850-851)

Pages:

62-65

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.850-851.62

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Online since:

December 2013

Authors:

Yi Liu, Yan Fang Wang*, Li Jun Xiao, Ming Xing Liu, Zhi Qiang Shi

Keywords:

Corrosion Resistance, Cu-Based Metallic Glasses, Minor Alloy, Thermal Stability

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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