Research on Corrosion Behavior of High Strength Steel at Synergistic Effect of Temperature, Dissolved Oxygen and pH Value
The synergistic effect of temperature, dissolved oxygen and p H value on corrosion behavior of X80 pipeline steel in simulated Ku'erle soil solution was investigated by potentiodynamic polarization and orthogonal testing. The results show that there are great influences of the temperature, dissolved oxygen and p H value on the corrosion behavior for X80 pipeline steel. With the increase of temperature, the corrosion current density of X80 steel increases gradually. With oxygen content reducing, the corrosion current density of the sample is significantly reduced. With the increase of p H value, the corrosion current density of the sample shows a gradual decrease trend. The corrosive influence of dissolved oxygen on the X80 steel was maximal, while the temperature corrosive effect on metal is relatively minimal.