Preparation and Corrosion Resistance of Cu-Based Bulk Glassy Alloys

Abstract:

The Cu-based bulk glassy alloys in Cu-Zr-Ti-Ni systems were prepared by means of copper mold casting. The structure and corrosion resistance of Cu-based bulk glassy alloys were analyzed by X-ray diffraction (XRD), differential scanning calorimetry (DSC), electrochemistry method, lost weight method. The result indicates the supercooled liquid temperature interval (ΔT_x) is up to 70.98 K for Cu₅₀Zr₂₅Ti₁₅Ni₁₀ bulk glassy alloy. The maximum diameter was up to 5.0 mm for the Cu₅₅Zr₂₅Ti₁₅Ni₅ bulk glassy alloy. For electrochemistry corrosion in 3.5% NaCl solution, self-corrosion electric current density of the Cu₅₀Zr₂₅Ti₁₅Ni₁₀ bulk glassy alloys is obviously lower than that of stainless steel and brass, so corrosion resistance of Cu-based bulk glassy alloys is better than stainless steel and brass at the same corrosion condition. The lost weight method showed that the corrosion rate of brass, stainless steel and glassy alloy is respectively 10.08 g/(m²•h), 6.08 g/(m²•h) and 2.19 g/(m²•h) in the 3% NaCl solution, which also indicates that the corrosion resistance of Cu-based bulk glassy alloys is better than stainless steel and brass. The Cu-based bulk glassy alloys can be used in the special field demanding to have the super high strength, hardness and corrosion resistance.

• Periodical: Advanced Materials Research (Volumes 652-654)
• Pages: 1143-1148
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.652-654.1143
• Online since: January 2013
• Authors: Peng Jun Cao, Ji Ling Dong, Hai Dong Wu, Pei Geng Fan
• Keywords: Corrosion Resistance, Cu-Based Bulk Glassy Alloys, Electrochemistry Method, Lost Weight Method

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