Bright Nickel Sulfamate Plating
Question: We do electroforming using nickel sulfamate plating baths.
Question:
We do electroforming using nickel sulfamate plating baths. Lately one of our baths is giving us a much brighter than normal deposit. We are not adding any brighteners to the bath. What might be causing this? S.F.
Answer:
I have heard of a few cases of this happening. Although you say you are not adding any brighteners to the bath, might you be adding something to improve the hardness of the plate? Sometimes cobalt sulfamate is added for this purpose, and the cobalt will complex with impurities in the plating bath giving a brighter deposit. Another possible cause for this is the breakdown of the sulfamate in the plating bath. This tends to be a slow process but over time it can generate enough breakdown products to cause a brightening effect.
Related Content
-
Products Finishing Reveals 2024 Qualifying Top Shops
PF reveals the qualifying shops in its annual Top Shops Benchmarking Survey — a program designed to offer shops insights into their overall performance in the industry.
-
How to Maximize Nickel Plating Performance
The advantages of boric acid-free nickel plating include allowing manufacturers who utilize nickel plating to keep up the ever-changing regulatory policies and support sustainability efforts.
-
A Chromium Plating Overview
An overview of decorative and hard chromium electroplating processes.
