Corrosion Behavior of Low-carbon Steel in Acid Rain Environment
The corrosion behavior of low-carbon steel in the simulated acid rain environment was investigated. The results show that the two corrosion morphologies of woolly cloudlike and needle-like appear on the surface of the steel, and the corrosion products are primarily γ-FeOOH, α-FeOOH and Fe3O4. The corrosion rate is slow at first and then becomes rapid,and two kinds of corrosion pits emerge. The one is papilionaceous, and the other is narrow and deep pit extending into the matrix.