Journal
CORROSION SCIENCE
Volume 107, Issue -, Pages 60-75Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.02.020
Keywords
Stainless steel; Modelling studies; Weight loss; Acid corrosion; Intergranular corrosion; Transpassivity
Funding
- AREVA NC authorities
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This paper studies the corrosion behaviour of non-sensitized stainless steels in oxidizing environments, where they can suffer intergranular corrosion. In this case, corrosion rate estimated by gravimetric measurement is not constant as a function of time. This paper proposes a quantitative modelling of the IGC kinetics. Two models were developed: the first one is based on the geometrical simulation of the groove penetration; the second one uses a semi-empirical approach based on the typical shape of the corrosion kinetics. Both models reproduce successfully the experimental corrosion kinetics observed for aAISI310L stainless steel corroded in nitric acid containing oxidizing ions. (C) 2016 Elsevier Ltd. All rights reserved.
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