Optimization of Multiple Roughness Characteristics of Chemically Deposited Ni-P-W Coating Using Weighted Principal Component Analysis

Table 3

Chemical composition and operating condition.

Bath constituents	Values
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
pH	7-8
Temperature	90 ± 2^°C
Duration of coating	3 hrs
Bath volume (mL)	200