Structure, Composition, and Morphology of Aluminum–Nickel Alloys Electrodeposited from Dimethyl Sulfone Baths

Abstract

It is difficult to perform the electrodeposition of aluminum alloys from aqueous solutions. In this study, aluminum–nickel was electrodeposited from an electrolyte containing dimethyl sulfone, AlCl₃, and 0.0 mol%–1.0 mol% NiCl₂ at deposition potentials ranging from −1.0 to −5.0 V (Al/Al³⁺). The surface morphologies of the Al–Ni alloys depended on the NiCl₂ concentration and the deposition potential. The crystalline structure of the Al–Ni alloys also depended on the NiCl₂-concentration. Furthermore, the content of Ni in the Al–Ni alloys increased with increase in the NiCl₂ concentration.