Microbially influenced corrosion and inhibition of nickel-zinc and nickel-copper coatings by Pseudomonas aeruginosa
CORROSION SCIENCE, vol.79, pp.177-183, 2014 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 79
- Publication Date: 2014
- Doi Number: 10.1016/j.corsci.2013.11.004
- Journal Name: CORROSION SCIENCE
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.177-183
- Keywords: Alloy, Nickel, EIS, Microbiological corrosion, MICROBIOLOGICALLY INFLUENCED CORROSION, IMPEDANCE SPECTROSCOPY EIS, SULFATE-REDUCING BACTERIA, STAINLESS-STEEL, LOCALIZED CORROSION, ALLOY COATINGS, MILD-STEEL, BIOFILM, RESISTANCE, FILM
- Ankara University Affiliated: Yes
Abstract
The present study describes the effect of Pseudomonas aeruginosa on the corrosion rate of nickel-zinc and nickel-copper alloy coatings. The presence of bacteria was associated with decreases in R-ct values, suggesting that P. aeruginosa promoted the corrosion of nickel-copper alloy coatings. However, R-ct values of nickel-zinc coatings increased in response to bacterial inoculation, corresponding to a decrease in corrosion rate for nickel-zinc alloy coatings. Our results suggest that the activity of P. aeruginosa facilitated the corrosion of nickel-copper alloy, while serving a protective function for the nickel-zinc alloy. (C) 2013 Elsevier Ltd. All rights reserved.