Research Article
Electroless Deposition of Ni-Cu-P Coatings Containing Nano-Al2O3 Particles and Study of Its Corrosion Protective Behaviour in 0.5 M H2SO4
Table 4
Noise parameters of coatings in 0.5 M H2SO4 derived from electrochemical noise measurements.
| Concentration of nanoparticles
in the plating bath (ppm) |
(V) |
(A cm−2) |
(Ω cm2) |
| | 0 | 2.00 × 10−5 | 9.94 × 10−8 | 201 | | 5 | 1.59 × 10−4 | 7.34 × 10−7 | 217 | | 10 | 5.75 × 10−5 | 1.38 × 10−7 | 416 | | 20 | 9.44 × 10−5 | 1.19 × 10−7 | 794 | | 50 | 2.42 × 10−5 | 4.40 × 10−8 | 549 | | 100 | 1.28 × 10−4 | 3.57 × 10−7 | 360 | | 1000 | 3.92 × 10−5 | 1.24 × 10−7 | 317 |
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