Effects of Loading Ratio on Electroless Ni-P Alloy Plating

The effects of loading ratio on electroless nickel plating process were investigated with deposition rate,mass fraction of phosphorus in the coating and stability constant as evaluation index while the bath composition and plating process were kept constant.The experimental results show that the deposition rate decreases with the increase of loading ratio;the mass fraction of phosphorus in the coating increases with the increase of loading ratio;the stability constant fluctuates between 80%～94%;when loading ratio is 1.5dm2/L,the bath can be fully used.