Electroplating
More Blisters
We are plating Type 303 stainless steel with copper using a cyanide copper plating bath. After the completion of the cyanide plating step, we observe blisters on the surface of the parts. We use 5-gal tanks. What are we doing wrong?
Read MoreEN On Carbon Steel
Do you have a process for plating low-carbon steel with a high-phosphorus electroless nickel?
Read MoreBlisters Everywhere
We purchase zinc plated electronic enclosures from an offshore company. We periodically have problems with blistering when the parts are subjected to burn in. We did not seem to have this type of problem when the enclosures were plated domestically. Short of bringing production back to the U.S., what can we do to minimize or eliminate this problem?
Read MoreTrivalent Chromates Revisited
I normally do not write about recent papers in the technical literature. However, a paper that appeared in the October issue of Plating and Surface Finishing was of great interest and requires wider distribution. The paper, “Unexpected Results from Corrosion Testing of Trivalent Passivates,” by T. Rochester & Z. W. Kennedy, discusses results using one of the standard tests for the presence of hexavalent chromium.
Read MoreBlisters on Aluminum
After silver plating machined aluminum we test the parts by heating to 175oC for one hour. During the soldering step a good percentage of the parts blister. Do you have any suggestions for eliminating this problem?
Read MoreType 416 Stainless Steel and Adhesion
After plating we observe blistering and peeling. We have tried a number of different plating cycles without ant success. What do you suggest?
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Flexible Thickness Measurement
Instrument handles variety of coatings, thicknesses and substrates
Read MoreCadmium Plate Turns Black
We are currently cadmium-plating fasteners in a cyanide bath and are finding that the finish turns black after four to six days. Parts come out of the process more or less bright white. After the cadmium plate we rinse and apply a chromate, rinse and dry. One fastener is a little yellowish after a couple of weeks, but the others that are black were plated only four days ago. Can you make any suggestions as to how to solve this problem?
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