Research Article
Potentiodynamic Polarization Behaviour of Electroless Ni-P-W Coatings
Table 9
Results of confirmation test.
| | | Initial parameter level | Optimal parameter combination | | Prediction | Experimentation |
| | Level | A2B2C2D2 | A3B3C3D3 | | Ecorr (mV versus SCE) | −354.89 | | −278.71 | | Icorr(A/cm2) | 0.9031 | | 0.080 | | Grade | 0.662402 | 0.881417 | 0.916275 |
| | Improvement of grey relational grade = 0.253873 |
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