Research Article

Corrosion Resistance of Electroless Ni-Cu-P Ternary Alloy Coatings in Acidic and Neutral Corrosive Mediums

Table 1

Impedance data of Ni-Cu-P alloy coatings and uncovered ordinary steel after two hours of immersion in acid media.

(Ω·cm²) (μF·cm−2) (Ω·cm²) (μF·cm−2)

H2SO4 1 MUncovered ordinary Steel29051
NiCuP coating51345.610812.543
HCl 1 MUncovered ordinary Steel40560
NiCuP coating86330.573.54653