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The effect of ultrasonic vibration on the dechromisation corrosion of a CuCr alloy in HCl solution was studied and the corrosion mechanisms were analyzed. It is found that ultrasonic vibration reduces the dechromisation incubation time, accelerates the dechromisation corrosion rate, decreases the temperature and concentration of HCl solution, and when the dechromisation occurs it seriously weakens the microstructure of dechromisation layer. It is concluded that ultrasonic vibration can accelerate destruction of the passivation film on the Cr surface and increase the activities of Cl· and Cr.
The effect of ultrasonic vibration on the dechromisation corrosion of a CuCr alloy in HCl solution was studied and the corrosion mechanisms were analyzed. It is found that ultrasonic vibration reduces the dechromisation corrosion rate, accelerates the dechromisation corrosion rate, decreases the temperature and concentration of HCl solution, and when the dechromisation it seriously weakens the microstructure of dechromisation layer. It is said that that ultrasonic vibration can accelerate destruction of the passivation film on the Cr surface and increase the activities of Cl · and Cr.