Microbiologically Influenced Corrosion of Fe3Al/ZrO2 Composites in Marine Environment
Electrochemical impedance spectrum (EIS) and potentiodynamic polarization curve were applied to invest the corrosive behavior of Fe3Al/ZrO2 composites with different components in marine microbial medium. The results indicated that the existence of microbiology negatively moved the open circle potential. When the composites contained 30% (wt %) ZrO2, the passive film on electrodes surface was the thickest one, even after 25 days the material was still protected. When the content of ZrO2 was 90%, Fe3Al was in the least content, after 25 days the passive film has disappeared, but the material was still not eroded because of the high hardness and corrosion-resistant properties of ZrO2. When the content of ZrO2 was 80%, the passive film was partly damaged, which could lead to more serious local corrosion.
Yansheng Yin and Xin Wang
X. T. Chang et al., "Microbiologically Influenced Corrosion of Fe3Al/ZrO2 Composites in Marine Environment ", Advanced Materials Research, Vols. 79-82, pp. 2251-2254, 2009