The use of XPS for study of the surface layers of CrNi alloys electrodeposited from the Cr(III)Â +Â Ni(II) bath

► The morphology of Ni-rich and Cr-rich alloy coatings was found to have a nodular structure, however, Cr-rich deposits had nanoscale cracks. ► The passive film on CrNi alloys consists of Cr(OH)3, Cr(OH)O, Cr2O3 and low amounts of both NiO and organic substances. ► Nickel is incorporated in bulk of CrNi alloys as metallic Ni0, whereas, chromium is present as metallic and carbide phases.