INTERACTION OF BIOFILMS AND INORGANIC PASSIVE LAYERS IN THE CORROSION OF CU/NI ALLOYS IN CHLORIDE ENVIRONMENTS

A dissimilar electrochemical behaviour was found for 70/30 and 90/10 Cu/Ni alloys in different media containing chloride, sulphide or their mixtures. A synergistic effect of these anions on the corrosion process of copper-nickel alloys was verified through potentiodynamic measurements. Mixed cultures of facultative aerobic and anaerobic microorganisms were used to examine the corrosion behaviour of 70/30 and 90/10 Cu/Ni in organically polluted media. The uneven distribution of bacteria and their extracellular polymeric substances, mixed up with corrosion products reduces the protective characteristics of the outer layer of precipitated corrosion products.

• Supplemental Notes:
  • Corrosion Science, v 46 n 4, April 1990, p 302 [5 p, 14 ref, 7 fig]
• Authors:
  • Gomez de Saravia, S G
  • Mele, M F
  • de Videla, H A
• Publication Date: 1990

Language

• English

Subject/Index Terms

• TRT Terms: Chlorides; Copper; Copper alloys; Corrosion; Nickel alloys
• Old TRIS Terms: Bacterial corrosion; Corrosion environments
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00698365
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM