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This report describes the activities carried out by the two partners (UCL and CSM) concerning laboratory electrochemical noise (EN) measurements, field simulation in the laboratory, data treatments and the design and construction of an EN corrosion monitoring system for field corrosion measurements.

Laboratory simulations of field and field measurements were carried out in solutions containing chloride and natural sea water on the following materials: cold-rolled and zinc)coated steels; ferritic (AISI 436 type), austeritic (AISI 304 type) and duplex stainless steels (2304 type).

Cold-rolled and zinc-coated steels were tested under uniform corrosion conditions and stainless steel samples were tested under pitting crevice corrosion conditions and under application of load.

Good agreement was found between the results obtained by EN and conventional electrochemical techniques. In several cases the EN technique was found to have more sensitivity.

An EN corrosion monitoring system for field corrosion measurements has been constructed and employed for field measurements. Field results showed that it is possible to use the EN technique to identify, in situ, the corrosion onset and give information about the kind and degree of corrosion process.rocess.

Additional information

Authors: WILLIAMS D E, University College London (GB);CONDE A, University College London (GB);MICELI P, CSM, Roma (IT);LUPERI S, CSM, Roma (IT);DE CRISTOFARO N, CSM, Roma (IT)
Bibliographic Reference: EUR 20046 EN (2001), pp.99. Euro: 14.50
Availability: Available from EUR-OP sales agents. URL:
ISBN: ISBN:92-894-2017-0
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