Embrittlement Issues
We are thinking about increasing current density in one of our barrel plating lines and assume that the parts will be subject to increased hydrogen embrittlement. Is this a fair assumption?
Q: Our company plates cadmium on steels that are subject to hydrogen embrittlement. We are thinking about increasing current density in one of our barrel plating lines and assume that the parts will be subject to increased hydrogen embrittlement. Is this a fair assumption? N. U.
A: The efficiency of the classic cyanide cadmium bath does decrease somewhat at higher current densities. The result of this would mean that you are generating more hydrogen gas that in turn could increase the amount of hydrogen embrittlement that occurs during the plating process. You can also argue that using increased current density will allow you to deposit a somewhat heavier layer of cadmium in the same amount of time. The thicker layer of cadmium should reduce somewhat the absorption of hydrogen. Overall, I would say the difference that you would have would be minimal.
Related Content
-
Masking Solutions Provider CFS Dramatically Expands Capabilities and Capacity
Custom Fabrication & Supplies (CFS) completed a new plant expansion packing 10 times the capacity into twice the space. It dramatically enhances the supplier’s custom capabilities to provide extremely precise and cost-effective masking solutions.
-
Curing Oven Basics
Simply heating up the substrate does not cure the coating. There are many variables to consider when choosing the best cure oven for your application...
-
Concrete Reinforced Bars Built to Last
Not all corrosion-resistant materials for infrastructure are created equally. Epoxy-coated steel rebar has advantages that other materials used to prevent corrosion do not.