Microbiologically influenced corrosion of NiZn alloy coatings by Delftia acidovorans bacterium

San N. O., NAZIR H., DÖNMEZ G.

CORROSION SCIENCE, cilt.64, ss.198-203, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 64
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.corsci.2012.07.021
  • Dergi Adı: CORROSION SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.198-203
  • Anahtar Kelimeler: Alloy, EIS, Microbiological corrosion, Nickel, SEM, Zinc, QUARTZ-CRYSTAL MICROBALANCE, CARBON-STEEL, DESULFOVIBRIO-VULGARIS, COATED STEELS, LONG-TERM, ZN-NI, BIOFILM, RESISTANCE, BEHAVIOR, WATER
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, Delftia acidovorans was isolated from water treatment pipe system and used to demonstrate microbiologically influenced corrosion of NiZn alloy coatings using electrochemical techniques. The surface morphologies and the corrosion products were determined using scanning electron microscopy (SEM) and energy dispersive X-ray spectra (EDS) analysis. Results showed that when the metabolic activity reached maximum level, corrosion activity of NiZn alloy coatings significantly increased in correlation with E-corr, I-corr, QCM and R-ct. Furthermore, crevice corrosion which has been seen due to bacterial adhesion confirms that D. acidovorans plays an important role in corrosion of NiZn alloy coating. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.