Effect of atomic mixing on the electrochemical and corrosion properties of Ni-Ti surfaces

Nickel films of 10nm thickness on titan'um substrates were irradiated with 10keV Ar+ ions to various fluences using dynamic recoil mixing (DRM) conditions, where sputtered nickel is continuously replenished. Rutherford backscattering (RBS) analysis of the resulting films shows considerable Ni-Ti mixing and the possible formation of a Ni-Ti compound. Potentiostatic polarisation curves for these mixed films indicate that their life for use as electrocatalytic electrodes for chlorine liberation is increased by a factor of five