XPS and AES investigation of two electroless composite coatings

The morphology and composition of the Ni-P-SiO2 and Ni-P-CeO2 electroless 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%. (C) 2000 Elsevier Science B.V. All rights reserved.