Comparative Study on Thermodynamical and Electrochemical Behavior of Al88Ni6La6 and Al86Ni6La6Cu2 Amorphous Alloys

Two amorphous ribbons with the compositions of Al88Ni6La6 and Al86Ni6La6Cu2 were made using the meltspun method, and their thermal response and electrochemical behavior were studied comparatively. Differential scanning calorimetry (DSC) and electrochemical polarization measurements indicated that Al86Ni6La6Cu2 exhibited slightly higher crystallization temperature (Tx), lower melting point (T1) and better corrosion resistance in 0.01 mol · L−1 NaCl alkaline solution. These results demonstrated that Cu (2%) addition could slightly promote the glass forming ability, but it could greatly improve the corrosion resistance of Al88Ni6La6 alloy in 0.01 mol · L−1 NaCl alkaline solution.