EIS study on pitting corrosion of 7150 aluminum alloy in sodium chloride and hydrochloric acid solution

2010 ◽  
Vol 61 (9) ◽  
pp. 783-789 ◽  
Author(s):  
G. S Peng ◽  
K. H. Chen ◽  
H. C. Fang ◽  
H. Chao ◽  
S. Y. Chen
Keyword(s):  
Aluminum Alloy ◽  
Sodium Chloride ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Pitting Corrosion

scholarly journals Galvanic corrosion of aluminum alloy (Al2024) and copper in 1.0M hydrochloric acid solution

2012 ◽  
Vol 29 (6) ◽  
pp. 818-822 ◽  
Author(s):  
Ahmed Y. Musa ◽  
Abu Bakar Mohamad ◽  
Ahmed A. Al-Amiery ◽  
Lim Tien Tien
Keyword(s):  
Aluminum Alloy ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Galvanic Corrosion

scholarly journals Corrosion Inhibition of 3003 Aluminum Alloy in Molar Hydrochloric Acid Solution by Olive Oil Mill Liquid By-Product

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
M. Chadili ◽  
M. M. Rguiti ◽  
B. El Ibrahimi ◽  
R. Oukhrib ◽  
A. Jmiai ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Electrochemical Techniques ◽  
Protective Layer ◽  
Effect Of Temperature ◽  
Inhibiting Effect ◽  
Inhibitory Efficiency ◽  
Protection Property

According to the literature, the works on the inhibition of aluminum alloy corrosion using naturally occurring compounds are limited. For this, the inhibiting effect of oil mill liquid by-product (OMW) on the corrosion of 3003 aluminum alloy (AA3003) in molar hydrochloric acid solution was evaluated using electrochemical techniques. In parallel, a computational approach based on DFT/B3LYP and Monte Carlo methods was used to understand the inhibition process under electronic and atomic scales, respectively. The experimental results reveal that OMW has a good inhibiting effect on the corrosion of AA3003 alloy in the tested solution and acts as a cathodic inhibitor. The inhibitory efficiency increases by increasing OMW concentration to attain 89% at 6.0 ppm. The effect of temperature shows that the inhibition efficiency of OMW decreases with temperature rising. Nevertheless, a good prevention capacity of 83% is obtained at 338 K. Such interesting achieved protection property was attributed to the adsorption of OMW constituents onto the alloy surface via a mixed physichemisorption process. This process is found to obey the Langmuir adsorption isotherm. Furthermore, the activation thermodynamic parameters of the corrosion process of AA3003 alloy were also determined and discussed. The computational outcomes outlined the ability of the OMW components to interact favorably with the metal surface, hence the formation of a protective layer, which justified the observed inhibition behaviors. Conferring to the present study, OMW can be used as a good green corrosion inhibitor for AA3003 alloy in the acidic medium.

scholarly journals Investigation of copper(I) sulphide leaching in oxidative hydrochloric acid solution

10.30544/71 ◽  
2015 ◽  
Vol 21 (4) ◽  
pp. 253-258 ◽  
Author(s):  
Branislav Marković ◽  
Miroslav Sokić ◽  
Željko Kamberović ◽  
Dragana Živković ◽  
Nada Štrbac ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Passive Layer ◽  
Chloride Ions ◽  
Elemental Sulphur ◽  
Gaseous Oxygen ◽  
Influence Of Temperature ◽  
Leaching Reaction

Present work is focused on the copper (I) sulphide leaching with sodium chloride in hydrochloric acid solution and with introduction of gaseous oxygen. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the literature data and products which were formed during the process and the overall leaching reaction was defined. The influence of temperature and time on the leaching degree of copper was experimentally determined. The quantity of dissolved copper increases with the increase of both investigated parameters. Elemental sulphur was formed as the main leaching product, precipitated at the particle surfaces and chloride ions have a role to disrupt the creation of this passive layer.

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