ELECTROCHEMICAL FORMATION AND CORROSION STUDIES ON PHOSPHORUS-CONTAINING NICKEL-ZINC ALLOYS

Electrochemical formation of nickel-zinc electrodeposits with and with out phosphorous inclusion has been carried out under controlled potent iostatic and galvanostatic conditions. Impedance spectral measurements have been used for the dermination of the polarization behaviour of t he electrodeposits with a view to examine the dependance of corrosion characteristics on the experimental conditions. Galvanostatic depositi on yields preparations endowed with increased resistance towards elect rochemical corrosion, especially when higher current density is used. Phosphorous containing nickel-zinc deposits exhibit substantially impr oved corrosion resistance.