Co-deposition of Al-Ni Alloy in NiCl2-AlCl3-1-ethyl-3-methylimidazolium bromide (EMIMBr) ionic liquid

摘要

Al-Ni Alloys were obtained from NiC12-A1Cl3-1-ethyl-3-methylimidazolium bromide ([EMIM]Br) ionic liquid at room temperature.The analysis of A1-Ni alloys that co-deposited at different potentials for 2h were performed using Scanning Electron Microscopy (SEM) and X-ray diffraction analysis (XRD).It appears that Ni has been rapidly solidified in the alloys and homogeneous Al-Ni alloys can be obtained at room temperature.As increasing the overpotential,the amount of Ni in the alloys was decreased whereas the amount of A1 was increased.The chloride pitting potentials of alloys with the molar ratio of NiCl2/A1Cl3/[EMIM]Br 0.03:2:1 was approximately 0.3 V more than pure Al.