Chloride Corrosion Threshold of Reinforcing Steel in Alkaline Solutions—Open-Circuit Immersion Tests

CORROSION ◽  
2001 ◽  
Vol 57 (1) ◽  
pp. 19-28 ◽  
Author(s):  
L. Li ◽  
A. A. Sagüés
Keyword(s):  
Open Circuit ◽  
Alkaline Solutions ◽  
Reinforcing Steel ◽  
Chloride Corrosion

Effect of Molybdate on the Passivation of Carbon Steel in Alkaline Solutions under Open-Circuit Conditions

2016 ◽  
Vol 163 (10) ◽  
pp. C649-C658 ◽  
Author(s):  
Yong Teck Tan ◽  
Sudesh L. Wijesinghe ◽  
Daniel J. Blackwood
Keyword(s):  
Carbon Steel ◽  
Open Circuit ◽  
Alkaline Solutions

A Comparative Study of the Electrooxidation of Ethylene Glycol on Transition Metal Electrodes in Alkaline Solution

2012 ◽  
Vol 15 (4) ◽  
pp. 255-263 ◽  
Author(s):  
I. Danaee ◽  
M. Jafarian ◽  
A.A. Shahnazi Sangachin ◽  
F. Gobal
Keyword(s):  
Ethylene Glycol ◽  
Alkaline Solution ◽  
Open Circuit Potential ◽  
Platinum Oxide ◽  
Open Circuit ◽  
Alkaline Solutions ◽  
Group Viii ◽  
Metal Electrodes ◽  
Oxidation Current ◽  
Cyclic Voltammetery

Electrodes made of group VIII and IB metals were examined for their redox process and electrocatalytic activities towards the oxidation of ethylene glycol in alkaline solutions. The method of cyclic voltammetery (CV) and Open circuit potentials measurement (OCP) was employed. It is found that considerable electrooxidation current are observed for silver and copper but lower anodic overpotential for oxidation is obtained for gold and platinum. Oxide layer produced on the surface of all electrodes in alkaline solution under anodic scan participates in ethylene glycol electrooxidation. Oxidation current observed in the reverse scans for platinum and gold are higher than those observed in forward potential scan. Open circuit potential measurements have shown the interaction of ethylene glycol and electrodes.

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

Effect of Phosphorus on the Corrosion Resistance of Nickel Electrocoatings

2015 ◽  
Vol 228 ◽  
pp. 310-316
Author(s):  
B. Łosiewicz ◽  
Magdalena Popczyk ◽  
Magdalena Szklarska ◽  
Patrycja Osak
Keyword(s):  
Corrosion Resistance ◽  
Anodic Polarization ◽  
Open Circuit Potential ◽  
Electrochemical Corrosion ◽  
Amorphous Structure ◽  
Open Circuit ◽  
Alkaline Solutions ◽  
Nickel Coatings ◽  
Effective Manner ◽  
Passivation Potential

The electrodeposited Ni-P coatings are commonly used for their electrocatalytic properties towards hydrogen evolution reaction. However, their corrosion resistance in concentrated alkaline solutions is still less known. In this work, the effect of phosphorus on the resistance of nickel electrodeposits to electrochemical corrosion in 5 M KOH solution, was studied. Open circuit potential and anodic polarization measurements were performed to determine parameters of the corrosion resistance of the crystalline Ni deposit and amorphous Ni-P electrocoating. It was found that alloying of nickel with phosphorus is the effective manner of the improvement of the corrosion resistance of the nickel coatings. The obtained Ni-P electrode material contained 10 wt.% of P and revealed amorphous structure. The increase in the corrosion resistance of the Ni90P10system as compared to that determined for comparable Ni polycrystalline electrode was due to phosphate formation responsible for broad passivation potential in alkaline medium and amorphous structure.

Electrochemical Aspects of Etching and Passivation of Silicon in Alkaline Solutions

1995 ◽  
Vol 386 ◽  
Author(s):  
Joong S. Jeon ◽  
Srini Raghavan
Keyword(s):  
Current Density ◽  
Corrosion Current Density ◽  
Open Circuit Potential ◽  
Corrosion Current ◽  
Open Circuit ◽  
High Resistivity ◽  
Alkaline Solutions ◽  
Current Densities ◽  
Passivation Potential ◽  
P Type

ABSTRACTElectrochemical polarization experiments were performed on Si wafers in ammoniacal solutions maintained at a pH in the range of 9.5 to 11.5. Anodic polarization of silicon yielded curves which are typical for materials that undergo passivation. The values of open circuit potential and passivation potential for p-type Si wafers were more anodic than for the n-type Si wafers. Corrosion current density of p-type Si wafers of low resistivity was lower than that of wafers of high resistivity. Corrosion current densities correlated well with surface roughness induced in alkaline solutions. Addition of surfactant or H2O2 to alkaline solutions reduced critical current density for passivation and corrosion current density.

Sign in / Sign up

Export Citation Format

Share Document