Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.13091/5141
Title: | Understanding Corrosion Morphology of Duplex Stainless Steel Wire in Chloride Electrolyte | Authors: | Örnek C. Davut K. Kocabaş M. Bayatlı A. Ürgen M. |
Keywords: | corrosion morphology duplex stainless steel electron backscattered diffraction hydrogen embrittlement lacy cover pit perforation pitting corrosion potentiodynamic polarisation scanning electron microscopy selective corrosion wire |
Publisher: | Multidisciplinary Digital Publishing Institute (MDPI) | Abstract: | The corrosion morphology in grade 2205 duplex stainless steel wire was studied to understand the nature of pitting and the causes of the ferrite phase’s selective corrosion in acidic (pH 3) NaCl solutions at 60 °C. It is shown that the corrosion mechanism is always pitting, which either manifests lacy cover perforation or densely arrayed selective cavities developing selectively on the ferrite phase. Pits with a lacy metal cover form in concentrated chloride solutions, whereas the ferrite phase’s selective corrosion develops in diluted electrolytes, showing dependency on the chloride-ion concentration. The pit perforation is probabilistic and occurs on both austenite and ferrite grains. The lacy metal covers collapse in concentrated solutions but remain intact in diluted electrolytes. The collapse of the lacy metal cover happens due to hydrogen embrittlement. Pit evolution is deterministic and occurs selectively in the ferrite phase in light chloride solutions. © 2021 by the authors. | URI: | https://doi.org/10.3390/cmd2030021 https://hdl.handle.net/20.500.13091/5141 |
ISSN: | 2624-5558 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections |
Show full item record
CORE Recommender
SCOPUSTM
Citations
10
checked on Apr 27, 2024
Page view(s)
6
checked on Apr 29, 2024
Google ScholarTM
Check
Altmetric
Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.