The Corrosion Characteristic Study of GGH Materials

Abstract

Through chemical composition analysis of corroded steel sample and enamel steel sample, through SEM-EDS and XRD analysis of corroded steel sample, the corrosion characteristics was studied, the possible influence to the heat exchange and flow rate were also analyzed. Through polarization curves experiment, a comparative analysis of the corrosion resistance between old GGH materials and newly installed enamel steel is made. The results have shown that the corrosion resistance with the heat transfer surface in GGH will decrease with the temperature increasing, but the enamel steel’s corrosion resistance and stability is strikingly better than the old materials.