Electroplating
Another Citric Acid Passivation Question
We are having a problem with citric acid passivation of 303 stainless steel. The parts continue to fail a 24-hour salt spray test. Currently we passivate for 30 min. Should we double the amount of time in the citric acid? Do you have any suggestions for us?
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Building Blocks of an Aqueous Cleaning Process
Chemistry, time, temperature and mechanical energy are the keys
Read MoreNickel and Stress
I need some basic information on stress in nickel deposits. Can you recommend some sources?
Read MoreElectroless Nickel and Magnetism
We apply electroless nickel to a number of different steel substrates. We routinely demagnetize the parts before placing them in the plating bath. Recently one of our chemical vendors suggested that we were wasting money by doing this since electroless nickel does not seem to be harmed by magnetic substrates. What are your thoughts?
Read MorePitted Copper
We use a copper sulfate plating bath. We recently have been observing pitting in the copper deposits. Do you have any suggestions for solving this problem?
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Finger Prints on Zinc Plating
We supply zinc plated components to a number of different industries. We do not do the actual plating but rely on outside vendors. Frequently, we will receive plated parts from our vendors with fingerprints spotting and dull areas. Do you have any suggestions and how we can reduce the number of rejected parts?
Read MorePlating on Aluminum Again
Our plating shop does a lot of plating on aluminum. We always seem to have problems with blistering. When we remove some of the blisters to examine the defect, it appears that the zincate layer is at fault. Do you have any suggestions on how we can improve our zincating process?
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