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International Journal of Corrosion
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International Journal of Corrosion
/
2010
/
Article
/
Tab 1
/
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)
(
μ
F·cm
−2
)
(Ω·cm²)
(
μ
F·cm
−2
)
H
2
SO
4
1 M
Uncovered ordinary Steel
—
—
290
51
—
NiCuP coating
513
45.6
108
12.5
43
HCl 1 M
Uncovered ordinary Steel
—
—
405
60
—
NiCuP coating
863
30.5
73.5
46
53