A new cost-effective process to fabricate aluminide coatings was developed. Coating layers consisting of nickel aluminides could be formed by electrodeposition of Al layers from a dimethylsulfone-AlCl3 electrolyte on Ni substrates and subsequent annealing in air or vacuum at temperatures of 700-1150 degrees C. Analysis of the intermetallic layers by XRD, SEM and EDX indicated the formation of Al3Ni and Al3Ni2 at 700 degrees C, AlNi at 900 degrees C and 1000 degrees C, and AlNi and AlNi3 at 1150 degrees C. The Annealing atmosphere did not affect the resulting intermetallic products. [doi:10.2320/matertrans.M2010421]