Abstract AsSb alloys were deposited electrochemically onto flat, smooth Ni-plated Cu sheets from aqueous citric acid solutions and analysed by X-ray photoelectron spectroscopy (XPS) and angle-resolved (AR) XPS. Samples prepared and manipulated in air showed marked surface oxidation of both alloy elements, present as As 2 O 3 and Sb 2 O 3 . Oxide-free samples were obtained when electrochemical synthesis and transfer to the ultrahigh vacuum XPS chamber were carried out in an inert atmosphere. ARXPS analysis of oxide-free alloy samples obtained at large negative potential showed an increase in intensity of the As(2p 3 2 ) peak at grazing take off angles. This result, showing As surface enrichment, supports a previously proposed kinetic model of AsSb alloy electrodeposition.