Abstract The problem of insulation voltage selection in potential-difference detection method performance electrical insulating metal pair flowing seawater is discussed. In seawater, 921A-B10 was taken as the research object to design corrosion test material. natural test, galvanic and simulated material were carried out respectively. shows that larger analog resistance series is, smaller curre...

Thermally sprayed cermet coatings are adequate solutions to improve cavitation and wear resistance of hydraulic turbines made stainless steel (SS), especially in rivers with a high sediment load, such as the Madeira River Brazil. However, some cermets easily dissolved river water, leading premature failure coating costly maintenance. Moreover, galvanic corrosion induced by coupling SS can accel...