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Materials 2015, 8(12), 8047-8058; doi:10.3390/ma8125443

Effect of Water Nutrient Pollution on Long-Term Corrosion of 90:10 Copper Nickel Alloy

Centre for Infrastructure Performance and Reliability, The University of Newcastle, Callaghan, New South Wales 2308, Australia
Academic Editor: Peter J. Uggowitzer
Received: 26 September 2015 / Revised: 17 November 2015 / Accepted: 20 November 2015 / Published: 27 November 2015
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Abstract

Due to their good corrosion resistance, copper and copper alloys such as 90:10 Cu-Ni are used extensively in high-quality marine and industrial piping systems and also in marine, urban, and industrial environments. Their corrosion loss and pitting behaviour tends to follow a bi-modal trend rather than the classic power law. Field data for 90:10 copper nickel immersed in natural seawater are used to explore the effect of water pollution and in particular the availability of critical nutrients for microbiologically induced corrosion. It is shown, qualitatively, that increased dissolved inorganic nitrogen increases corrosion predominantly in the second, long-term, mode of the model. Other, less pronounced, influences are salinity and dissolved oxygen concentration. View Full-Text
Keywords: long-term corrosion; copper alloys; Cu-Ni; bi-modal; microbiologically-influenced corrosion (MIC) long-term corrosion; copper alloys; Cu-Ni; bi-modal; microbiologically-influenced corrosion (MIC)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Melchers, R.E. Effect of Water Nutrient Pollution on Long-Term Corrosion of 90:10 Copper Nickel Alloy. Materials 2015, 8, 8047-8058.

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