Application: 1500 psi deionized water exits my expensive tungsten carbide nozzles into a spray chamber. Somehow high static charge is being generated by the cloud of aerosol or the high velocity of the discharge-- thousands of volts measured with static meter. Problem: with probably less than 10 hours of use I am seeing very high wear. . . to the point that my pumps cannot keep up with flow demand and still keep the pressure up. Presently, pressure has degraded to 1000 psi while the pumps are running full speed. Microscopic exam indicates wear at the nozzle tip is high and causes ragged edge and enlarging of exit port. Nozzle orifice is 0.015" to start. Some observations since I started looking for solution: i now understand there are two types of tungsten carbide typically used in this application-- Cobalt binder and nickel binder. A metallurgist tells me it is typical that the binder is solvated first and allows the main hard components to fall away causing serious erosion / corrosion. Also, cobalt is known to be the bad actor with DI water. I understand the stress cracking at the interface due to corrosion may be at fault. typically this can occur as a result of residual stresses built up in the making of the Tungsten carbide. I need some help on a good solution. So far, I am considering silicon carbide but cannot find a supplier that can make such a small hole in it. It will be a lot more expensive I bet also. From what I have found so far it seems nickel is a lot more resistant to DI water corrosion so I am waiting to find out from supplier which type I bought. They don't know off hand. Also, to reduce residual stresses in the matrix it seems cryogenic processing might be a good idea. I have a source that can do that. One solution then, could be to use the Tungsten carbide with nickel binder and run it through cryo processing. However, I am still left with the phenomenon of electrolytic corrosion which seems could be a very high possibility. How can I prove that is it? How can I eliminate it? grounding? feeding a voltage into the system? It would be easy to isolate the nozzles from the manifold to prevent conductive flow. . .