Electrochemical behavior of transition metals and refractory compounds of titanium in synthetic sea water

1988 ◽  
Vol 27 (2) ◽  
pp. 162-166 ◽  
Author(s):  
A. D. Verkhoturov ◽  
M. A. Kuzenkova ◽  
N. V. Lebukhova ◽  
I. A. Podchernyaeva
1984 ◽  
Vol 23 (19) ◽  
pp. 3010-3017 ◽  
Author(s):  
David E. Morris ◽  
Yasuhiko Ohsawa ◽  
Donald P. Segers ◽  
M. Keith DeArmond ◽  
Kenneth W. Hanck

1990 ◽  
Vol 39 (2) ◽  
pp. 59-64
Author(s):  
Toshiyasu Tamura ◽  
Toshitsugu Fukuyama ◽  
Yoichi Shutara ◽  
Eiichi Sato

1975 ◽  
Vol 53 (3) ◽  
pp. 389-406 ◽  
Author(s):  
Remigio Germano Barradas ◽  
Keith Belinko ◽  
John Ambrose

The electrochemical properties of lead electrodes in aqueous chloride solutions were experimentally investigated over a range of 0.1 to 6.0 M HCl with the aim of extending previous work carried out only at 1.0 M HCl concentration. Experimental results using the rotating disc electrode technique, cyclic voltammetry, galvanostatic and potentiostatic charging conditions were employed in conjunction with spectroscopic studies of the electrolyte and X-ray powder diffraction analyses of electrode surface products. Experiments were also carried out in simulated sea water (3% NaCl) at different pH and compared with results obtained using HCl at the same molar concentration. At all chloride concentrations the overall reaction led to the formation of PbCl2 on the electrode surface, with the exception that in NaCl solutions where pH ≥ 6.5, Pb(OH)Cl was found to be one of the products. For concentrations of less than 0.4 M HCl, our results indicated that the diffusion of chloride ions to the electrode surface was the limiting factor in the formation of a passivating PbCl2 layer. At concentrations of about 0.7 M HCl, the electrochemical behavior showed a pattern of results which were interpreted in terms of a "passivation–dissolution" competitive mechanism consistent with the solubility minimum of PbCl2 in aqueous chloride solutions.


Author(s):  
N Ivanova ◽  
E Ivanova ◽  
A Lobanov ◽  
T Mikhailik ◽  
V Pugachev ◽  
...  

2012 ◽  
Vol 229-231 ◽  
pp. 40-43
Author(s):  
Yong Liu ◽  
Xing Hua Tong ◽  
Bao Guo Li ◽  
Yan Gang Wang ◽  
Lin Sen Zhu

In order to study the corrosion behavior of Q235B steel in seawater at Weihai, the indoor simulated and accelerated corrosion test is carried out by adding H2O2 in seawater. Tafel polarization curves and electrochemical impedance spectroscopy (EIS) techniques are employed to investigate the corrosion electrochemical behavior of Q235B steel. Polarization curves and EIS are acquired by electrochemical workstation. From polarization curves, it is found that the corrosion rate rises rapidly during the initial period, and it becomes highest on the 3rd day, then drops, and tends to be stable after about 15 days. After that, the corrosion rate reduces slowly due to the covering effect of corrosion products, and then the conclusion is confirmed by EIS analysis. Analytical results indicate that the rust layer plays a positive role of hindering the corrosion process.


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