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topic 11951

Reverse pulse additive analysis


 

Hallo,

We're using reverse pulse plating equipment for copper plating. I would like to get some information of recommended way to measure the brightener concentration. Now we're using the C.V.S and we think that it isn't accurate.

Best Regards,

Benny Minkowski
- Migdal Haemek, Israel


 

What method of cyclic voltammetric stripping are you presently using? For Acid copper? Is the method from the manufacturer of the brightener?

pooky
tom pullizi signature
Tom Pullizzi
Falls Township, Pennsylvania

 

Brightening action depends on polarization of the cathodic surface. Use of a reverse pulse will disturb the polarized layer. If the reverse pulse is occurring at intervals shorter than required for polarizing and brightening, the purpose of addition of brighteners might be defeated. I would critically assess if brightener can do any good with reverse pulse plating.

I feel the consumption would depend a lot on the exact current cycle, circulation in the bath in addition to actual ampere hours.

Yashawant Deval
electroplating shop - Pune, INDIA



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