The water chemistry is definately suspect as a contributing environment. The use of chloramine in the treatment process is present, and the water pH is 8.9-9.0 The 6-in dia. shaft that is bonded to the bronze impeller is: stainless. That may also be contributing to galvanic action. The pump...
I am investigating the primary cause of corrosion on a large pump impeller and wear ring that is in water treatment plant service. I recovered a sample of the oxidation coating from the ID of the wear ring for ICP analysis. The levels of Al and Cu present in the analysis are inversely...
