Research Article
Improvement in Tribological Performance of Ni-P-TiO2 Composite Coatings Using Taguchi Technique with Grey Relational Analysis
Table 1
Chemical composition and working conditions for electroless bath.
| | Bath chemical composition | Quantity | Working conditions | |
| | NiSO4·6H2O (nickel sulphate) | 45 g/L | pH | 4.5–5.0 | | NaH2PO2·2H2O (sodium hypophosphite) | 20 g/L | Bath temperature | 85 ± 2°C | | TiO2 particles | 5 g/L | Bath volume | 250 mL | | C6H5Na3O7·2H2O (trisodium citrate) | 15 g/L | Stirrer speed | 300 rpm | | CH3COONa (sodium acetate) | 5 g/L | Deposition time | 3 hours | | C12H25NaO4S (sodium dodecyl sulphate) | 0.2 g/L | Annealing temperature | 400°C |
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