Reconditioning of Electroless Nickel Plating Bath on Magnesium Alloys
The reconditioning operation of electroless nickel (EN) plating was studied and the influence of aging on the deposition speed, phosphorous content and stability of the operating solution was analyzed. The results showed that aging of the EN bath caused a dramatic declining of the deposition speed and the bath stability, while a slow increasing in phosphorous content of the deposit. Fluoride of NaF and NiF2 would precipitate from the bath due to the accumulation of sodium and fluorine ions during the replenishment. The sediment of NaF and NiF2 had a detrimental effect on the EN process and would deteriorate the protection of EN plating.
Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou
X. K. Liu et al., "Reconditioning of Electroless Nickel Plating Bath on Magnesium Alloys", Materials Science Forum, Vol. 686, pp. 720-726, 2011