Early Corrosion of X70 Steel in Soil Polluted by NaOH

To study the effect of alkaline soil pollution on X70 steel, the physical index and pH of soil polluted by NaOH with different content were tested in laboratory. The relationship between the index of NaOH polluted soil and the content of corrosive media was analyzed comparatively. And the corrosion behavior and law of X70 steel in alkaline polluted soil was revealed. The relationship between the corrosion rate of X70 steel and the corrosion parameters of polluted soil was studied. A relational model of corrosion rate of X70 steel and corrosion parameters of polluted soil was built by regression analysis method.