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Biofilm sensor for deep sea
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
NKE, France.
2014 (English)In: 2014 IEEE Sensor Systems for a Changing Ocean, SSCO 2014, Institute of Electrical and Electronics Engineers Inc. , 2014Conference paper, Published paper (Refereed)
Abstract [en]

In natural seawater, surfaces will be rapidly covered by microorganisms which form a thin film called biofilm. It is now generally admitted that biofilms may affect the electrochemical behavior of metals and alloys and thereby may accelerate the corrosion of the material. Biofilms formed in seawater around the World does not necessarily present the same aggressiveness in terms of corrosion risk, and recently some high alloy stainless steel corrosion failures were attributed to the particular aggressiveness of biofilms which form in tropical seawaters. In deep sea, the biofilm activity as well as the corrosion risk induced by these phenomena has to be assessed. The objective of the present study was to develop an autonomous sensor able to characterize seawater biofilms through their electrochemical effects on stainless steel surface. The sensor is able to in-situ detect the potential ennoblement and to quantify the cathodic reduction efficiency of biofilmed stainless steel, which is a major parameter to quantify the risk of corrosion propagation on these alloys, as well as the bacterial presence and activity. This sensor will be able to be deployed down to 3000 m depth for long term measurements.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2014.
Keywords [en]
biofilm, cathodic depolarisation, corrosion, deep sea, sensor, stainless steel, Alloy steel, Alloys, Biofilms, Metallurgy, Risk assessment, Seawater, Seawater effects, Sensors, Steel corrosion, Corrosion propagation, Electrochemical behaviors, Electrochemical effects, High-alloy stainless steel, Long-term measurements, Potential ennoblement, Stainless steel surface
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-40397DOI: 10.1109/SSCO.2014.7000368Scopus ID: 2-s2.0-84929448244ISBN: 9781479959488 (print)OAI: oai:DiVA.org:ri-40397DiVA, id: diva2:1361504
Conference
2014 IEEE Sensor Systems for a Changing Ocean, SSCO 2014, 13 October 2014 through 17 October 2014
Available from: 2019-10-16 Created: 2019-10-16 Last updated: 2019-10-16Bibliographically approved

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