Table 3: Electroless bath composition and operating condition.

ParametersValues

Nickel sulphate (g/L)20–30
Sodium hypophosphite (g/L)14–20
Sodium citrate (g/L)35
Ammonium sulphate (g/L)30
Lactic acid (g/L)5
Sodium tungstate (g/L)15–25
pH7-8
Temperature90 ± 2°C
Duration of coating3 hrs
Bath volume (mL)200