Microbiologically Influenced Corrosion of Fe₃Al/ZrO₂ Composites in Marine Environment

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 2251-2254
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.2251
• Online since: August 2009
• Authors: Xue Ting Chang, Shou Gang Chen, Yan Sheng Yin
• Keywords: Composite, Fe₃Al/ZrO₂, Marine, MIC

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