Effects of moisture content on soil corrosion behavior of Q235 steel

摘要

The corrosion behavior of Q235 steel in acidic soil was investigated with accelerated corrosion test by controlling the soil moisture content under constant temperature condition. Corrosion mass losses, macro surface corrosion morphology and the analysis of corrosion products were conducted using scanning electron microscope (SEM) and X-ray diffraction (XRD). This work presents the fact that within a certain range, the greater the water content, the corrosion behavior is more serious. In both soil with 10% and 20% moisture content, samples were pitting. In the soil with 30% moisture content, samples were uniform corrosion. The water in soil is a significant factor affecting the electrochemical reaction of metal corrosion.