Research Article
Potentiodynamic Polarization Behaviour of Electroless Ni-P-W Coatings
Table 1
Electroless bath composition and operating condition.
| Bath constituents | Values | Operating condition | Values |
| Nickel sulphate (g/L) | 20–30 | pH | 7-8 | Sodium hypophosphite (g/L) | 14–20 | Temperature | 90 ± 2°C | Sodium citrate (g/L) | 35 |
Ammonium sulphate (g/L) | 30 | Duration of coating | 3 hrs | Lactic acid (g/L) | 5 | Bath volume (mL) | 200 | Sodium tungstate (g/L) | 15–25 |
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