Journal
CORROSION SCIENCE
Volume 87, Issue -, Pages 6-10Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.06.025
Keywords
Stainless steel; Polarization; SEM; Crevice corrosion
Funding
- Engineering and Physical Sciences Research Council [EP/H020047/1] Funding Source: researchfish
- EPSRC [EP/H020047/1] Funding Source: UKRI
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In this study, the corrosion behaviour of annealed and not annealed AISI 444 ferritic stainless steel in tap water with and without addition of selected concentrations of chloride ions was investigated. Cyclic potentiodynamic macro (large area) and micro (small area) polarization measurements (CPP), salt spray test, SEM and EDS analysis were employed to evaluate the pitting and crevice corrosion susceptibility of annealed and not annealed AISI 444. The results obtained indicate that annealing does not improve the resistance to pitting and crevice corrosion. Moreover, micro CPP indicates local susceptibility to pitting on both annealed and not annealed materials; such susceptibility was not evident from macropolarization tests. (C) 2014 Elsevier Ltd. All rights reserved.
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