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Corrosion monitoring in a straw‐fired power plant using an electrochemical noise probe
Author(s) -
Cappeln F.,
Bjerrum N.J.,
Petrushina I.M.
Publication year - 2007
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200604045
Subject(s) - electrochemical noise , intergranular corrosion , corrosion , materials science , corrosion monitoring , metallurgy , electrochemistry , boiler (water heating) , molten salt , noise (video) , electrode , waste management , chemistry , engineering , image (mathematics) , artificial intelligence , computer science
Abstract Electrochemical Noise Measurements have been carried out in situ in a straw‐fired power plant using an experimental probe constructed from alumina and AISI 347 steel. Based on a framework of controlled laboratory experiments it has been found that electrochemical noise has the unique ability to provide in‐situ monitoring of intergranular corrosion in progress. The probe had a lifetime of two months. It was shown that down‐time corrosion in the boiler was negligible. Electrochemical noise data indicated that metal temperatures around 590°C should be avoided as the intergranular corrosion is at an increased level at this temperature, most likely because of favorable conditions for molten salt film condensation.