Table 1: Main controlling electroless parameters and their levels.

FactorsThe change of their values

NiSO4·6H2O6 g/L, 7.5 g/L, 10 g/L, 15 g/L
pH3.5, 4.0, 4.5, 4.8, 5.1
Bath temperature70°C, 75°C, 80°C, 90°C