Effect of marine biofilms on initiation time of crevice corrosion for stainless steels
- Montana State Univ., Bozeman, MT (United States). Center for Biofilm Engineering
- Univ. of Delaware, Lewes, DE (United States). College of Marine Studies
The effect of marine biofilms on the crevice corrosion of stainless steels S31600 and S31725 has been studied using the remote crevice assembly technique. Eight samples of each steel were used in both control and natural seawater. Results showed that biofilms significantly decreased the initiation time for both steels in coastal seawater, and the decrease was due to potential ennoblement by biofilms. Marine biofilms also significantly increased the propagation rate for S31600 and S31725 as measured by current density, weight loss and maximum and average depths of attack. The increase in propagation rate of crevice corrosion was caused by an increase of the cathodic reaction rate by biofilms.
- OSTI ID:
- 109950
- Report Number(s):
- CONF-950304--
- Country of Publication:
- United States
- Language:
- English
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