Study on the Effects of Fluid Parameters on Erosion-Enhanced Corrosion of 90/10 Copper-Nickel Alloy Using Wire Beam Electrode

This paper clarifies the effects of the fluid parameters of flow velocity, impact angle and sand impact frequency on the erosion-enhanced corrosion of 90/10 copper-nickel alloy by combining computational fluid dynamics (CFD) simulation, wire beam electrode (WBE) technology and electrochemical measurements. The results show that under the conditions without sand particles, erosion-enhanced corrosion is dominated by the impact angle and the flow velocity at lower (<0.860 m/s) and higher (2.370 similar to 5.644 m/s) flow velocities, respectively, while both the two fluid parameters have noticeable effects on erosion-enhanced corrosion at intermediate flow velocities (0.860 similar to 2.370 m/s). In contrast, adding sand particles corresponding to the sand impact frequency can further increase the corrosion current density without changing the effects of the flow velocity and impact angle. It demonstrates that all three fluid parameters show great effects on the erosion-enhanced corrosion of 90/10 copper-nickel alloy under conditions with sand particles.

Automated summary

This study investigates the effects of fluid parameters - flow velocity, impact angle, and sand impact frequency - on the erosion-enhanced corrosion of 90/10 copper-nickel alloy. By combining computational fluid dynamics simulation, wire beam electrode technology, and electrochemical measurements, the researchers find that under different flow velocities, erosion-enhanced corrosion is dominated by either the impact angle or the flow velocity. However, at intermediate flow velocities, both parameters have noticeable effects. Furthermore, the addition of sand particles increases the corrosion current density without changing the effects of flow velocity and impact angle, indicating the significant influence of all three fluid parameters on the erosion-enhanced corrosion of the alloy.