Topic: EN Loading

In loading an Electroless Nickel bath I know that the bath generally prefers larger plating surface areas.  In our particular application the plating area is way below the recommendations.  Our recommended surface are is .25-1 sq.ft/gal with optimum being .5 sq.ft./gal and we are around .029 sq.ft/gal.

Our current process has our baths running at nearly 100% concentration and a lower pH in order to keep the plating rate up.  As the bath ages and slows the pH raises and the nickel may raise to 106% if needed.  My thinking is that our process is somewhat backwards.

I was thinking that we should run the nickel concentration lower, more towards 94-95% if not lower and raise the pH of the bath to control the plating rate and potentially get more life out of the bath.

Anyone have any thoughts on this? Please?



Last edited by ChemicalWaste (02/17/2009 - 09:51 PM)