The effect of cerium ion on the formation, morphology, composition, and corrosion behavior of Ni–cerium oxide coatings was investigated by SEM, FESEM, XRD, EDS, XPS, EIS, and potentiodynamic polarization. The extremely highest corrosion resistant coating was obtained when the cerium ion concentration in the plating bath was 16 mM. It has been observed that the presence of cerium ion in the plating bath led to changes in the morphology of the coating from pyramid nodular structure to coaxial structure. By adding cerium ion to the plating bath, a considerable grain refinement in the nanometer region was observed.

No abstract

Ni high cerium oxide nanocomposite coatings were prepared by electrodeposition process using inexpensive and particle free aqueous baths containing NiCl 2 .6H 2 O and CeCl 3 .7H 2 O salts. Scanning electron microscopy, atomic force microscopy, EDAX and X-ray diffraction studies showed the possibility of deposition of nickel containing 35% cerium oxide composite coating. Electrochemical impedance spectroscopy and potentiodynamic data indicated that the presence of cerium oxide in the Ni deposit led to an increase in electrocatalytic activity in hydrogen evolution.

No abstract

No abstract