XPS and AES investigation of two electroless composite coatings

The morphology and composition of the Ni–P–SiO2and Ni–P–CeO2electroless composite coatings were investigated by SEM, XPS, and AES. The surfaces of the coatings are homogeneous, polished, and with strong corrosion resistance. For the Ni–P–SiO2 coating, the atomic percentages are Ni: 74.6%, P: 12.4%, Si: 2.77%, Fe: 2.32%, and O: 6.65%, and the compositions are Ni–P: 93.5%, SiO2: 3.27%, FeO: 1.56%, and Fe: 1.33%. q2000 Elsevier Science B.V. All rights reserved.