Chloride Corrosion Threshold of Reinforcing Steel in Alkaline Solutions—Cyclic Polarization Behavior

CORROSION ◽  
2002 ◽  
Vol 58 (4) ◽  
pp. 305-316 ◽  
Author(s):  
L. Li ◽  
A. A. Sagüés
Keyword(s):  
Alkaline Solutions ◽  
Reinforcing Steel ◽  
Cyclic Polarization ◽  
Polarization Behavior ◽  
Chloride Corrosion

Polarization behavior of activated reinforcing steel bars in concrete under chloride environments

2018 ◽  
Vol 164 ◽  
pp. 877-887 ◽  
Author(s):  
Binbin Zhou ◽  
Xianglin Gu ◽  
Hongyuan Guo ◽  
Weiping Zhang ◽  
Qinghua Huang
Keyword(s):  
Reinforcing Steel ◽  
Polarization Behavior ◽  
Steel Bars

Effect of Anodic and Cathodic Chloride Contents on the Macrocell Corrosion and Polarization Behavior of Reinforcing Steel

2016 ◽  
Vol 22 ◽  
pp. 45-58 ◽  
Author(s):  
Zhong Lu Cao ◽  
Hao Yu Chen ◽  
Lian Yu Wei ◽  
Makoto Hibino
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Chloride Content ◽  
Reinforced Concrete Structures ◽  
Reinforcing Steel ◽  
Anodic Reaction ◽  
Polarization Behavior ◽  
Mixed Control ◽  
Cement Mortars ◽  
Macrocell Corrosion

The effect of anodic and cathodic chloride contents on the macrocell corrosion and polarization behavior of reinforcing steel embedded in cement mortars were investigated and clarified. The results indicated that the higher cathodic chloride content could accelerate the cathodic reaction of cathode and make the controlling mode of macrocell corrosion changed from cathodic control to mixed control or anodic control. The higher anodic chloride content could accelerate the anodic reaction of anode and make the macrocell corrosion more controlled by cathode. These results will provide a guide to inhibiting the macrocell corrosion of reinforcing steel in concrete, which are not only useful for engineers to design and construct the new marine reinforced concrete structures, but also are helpful for engineers to repair or rehabilitate the existing chloride contaminated reinforced concrete structures, in the condition of avoiding the adverse effect of macrocell corrosion induced by the non-uniform distribution of anodic and cathodic chloride.

scholarly journals Polarization Behavior of Fe-Cu Alloys in Weakly Alkaline Solutions Containing Chloride Ions

2002 ◽  
Vol 51 (4) ◽  
pp. 178-179
Author(s):  
Je-Kyoung Kim ◽  
Atsushi Nishikata ◽  
Tooru Tsuru
Keyword(s):  
Chloride Ions ◽  
Alkaline Solutions ◽  
Weakly Alkaline ◽  
Polarization Behavior ◽  
Cu Alloys

scholarly journals Corrosion performance and degradation mechanism of a bi-metallic aluminum structure processed by wire-arc additive manufacturing

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Amin S. Azar ◽  
Angeliki Lekatou ◽  
Martin F. Sunding ◽  
Joachim S. Graff ◽  
Nicky Tzima ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Material Removal ◽  
Cathodic Polarization ◽  
Degradation Mechanism ◽  
Tensile Behavior ◽  
Corrosion Performance ◽  
Cyclic Polarization ◽  
Cross Sectional ◽  
Polarization Behavior ◽  
Wire Arc Additive Manufacturing

AbstractAn Al-5Mg alloy (AA5083) block, deposited over an AA6061 substrate by wire-arc additive manufacturing, was electrochemically tested along two different cross-sectional planes by cyclic polarization in 3.5 wt.% NaCl. The deposited layers and the interlayer boundaries showed similar polarization behavior regardless of the cross-sectional direction. The corrosion of both the substrate and the deposited layers was mainly attributed to the presence of relatively coarse intermetallic Al(Fe, Mn)Si particles. In the substrate, corrosion was governed by deep crevices along the interfaces of directionally aligned Al(Fe, Mn)Si particles with the Al matrix. The deposited layers and the interlayer boundaries showed pitting around numerous Al(Fe, Mn)Si particles and/or Al(Fe, Mn, Cr, Ti)Si at the interlayer boundaries, which were much finer compared to those of the substrate. The abundance of the fine precipitates and their intergranular location caused surface material removal, which was more extensive along the interlayer boundaries. The perpendicular z-y and z-x planes of the deposited block did not show significant differences in anodic polarization behavior. Differences were more distinct in the case of cathodic polarization. Some anisotropy in polarization behavior was noted through the thickness of the z-y plane that complies with the obtained tensile behavior.

The effect of fluoride on corrosion of reinforcing steel in alkaline solutions

1994 ◽  
Vol 36 (12) ◽  
pp. 2169-2180 ◽  
Author(s):  
A. Macías ◽  
M.L. Escudero
Keyword(s):  
Alkaline Solutions ◽  
Reinforcing Steel
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