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Here, we report the development of high corrosion-resistant (Ni-Fe) alloy coatings from a low-concentration bath through multilayer approach. The corrosion analysis of (Ni-Fe) alloys electrodeposited at different current densities (2.0–5.0 A/dm 2 ) revealed that the coating developed at 2.0 A/dm 2 , represented as (Ni-Fe) 2.0 A/dm 2 is highly anticorrosive. The corrosion resistance of monolayer (Ni-Fe) 2.0 A/dm 2 coating, showing a corrosion rate of 14.71 × 10 −2 mm/y was further improved by utilizing multilayer approach. Corrosion study revealed that multilayer coating having 120 layers, represented as (Ni-Fe) 2.0/4.0/120 was six times more anticorrosive (with corrosion rate = 2.33 × 10 −2 mm/y), compared to its monolayer counterpart. The improved anticorrosion performance of multilayered coatings was explained in the light of advanced instrumental techniques.
Yathish et al. (Fri,) studied this question.