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Effect of Chloride Ions Concentrations to Breakdown the Passive Film on Rebar Surface Exposed to L-Arginine Containing Pore Solution

Title
Effect of Chloride Ions Concentrations to Breakdown the Passive Film on Rebar Surface Exposed to L-Arginine Containing Pore Solution
Author
지텐드라 쿠마 싱
Keywords
steel rebar; concrete pore solution; passive film; corrosion; electrochemical impedance spectroscopy; scanning electron microscopy
Issue Date
2021-09
Publisher
MDPI
Citation
MATERIALS, v. 14, NO 19, Page. 1-18
Abstract
In the present study, 0.115 M L-arginine (LA) has been used as an eco-friendly inhibitor in simulated concrete pore solutions (SP-0) in order to form passive films on a steel rebar–solution interface until 144 h. Hence, 0.51 (SP-1) and 0.85 M NaCl (SP-2) were added in LA containing SP-0 solution to breakdown the passive film and to initiate corrosion reactions. The electrochemical results show that the charge transfer resistance (Rct) of steel rebar exposed to SP-1 and SP-2 solutions increased with respect to immersion periods. The sample exposed to the SP-2 solution initiated the corrosion reaction at the steel rebar–solution interface after 24 h of NaCl addition and formed pits; on the other hand, the sample without NaCl added, i.e., SP-0, showed agglomeration and dense morphology of corrosion products.
URI
https://www.proquest.com/docview/2581050384?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/172376
ISSN
19961944
DOI
10.3390/ma14195693
Appears in Collections:
OFFICE OF ACADEMIC AFFAIRS[E](교무처) > Center for Creative Convergence Education(창의융합교육원) > Articles
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