The inhibition effect of inorganic compounds on the corrosion of the 3003 aluminium alloy in the presence of sodium chloride

2002 ◽  
Vol 99 (2) ◽  
pp. 189-197 ◽  
Author(s):  
L. Bazzi ◽  
R. Salghi ◽  
A. Bouchtart ◽  
Z. El Alami ◽  
S. Kertit
Keyword(s):  
Sodium Chloride ◽  
Aluminium Alloy ◽  
Inorganic Compounds ◽  
Inhibition Effect

THE INHIBITION EFFECT OF ZINC AND SILICATE IONS ON PITTING CORROSION INDUCED BY CERIUM(III) IONS OF CARBON STEEL IN SODIUM CHLORIDE SOLUTION

2020 ◽  
pp. 2050038
Author(s):  
QIONGWEI LI
Keyword(s):  
Sodium Chloride ◽  
Carbon Steel ◽  
Pitting Corrosion ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Corrosion Potential ◽  
In Situ Observation ◽  
Inhibition Effect ◽  
Synergistic Inhibition

Pitting corrosion of carbon steel in sodium chloride solution induced by Ce[Formula: see text] and the synergistic inhibition effects of Ce[Formula: see text] and Zn[Formula: see text]/SiO[Formula: see text] were investigated using in-situ observation and electrochemical methods. The results showed that the presence of Ce[Formula: see text] could result in severe pitting corrosion and a positive shift in the corrosion potential. It was found that individual Ce[Formula: see text], Zn[Formula: see text], or SiO[Formula: see text] had low inhibition efficiencies, whereas the combination of Ce[Formula: see text] and Zn[Formula: see text] or SiO[Formula: see text] proved to be highly effective in inhibiting the development of pits in two different ways and in enhancing the corrosion resistance. The pitting corrosion and inhibition mechanisms were discussed based on the results.

scholarly journals The Corrosion Inhibition of AA6082 Aluminium Alloy by Certain Azoles in Chloride Solution: Electrochemistry and Surface Analysis

Coatings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 380 ◽  
Author(s):  
Klodian Xhanari ◽  
Matjaž Finšgar
Keyword(s):  
Surface Layer ◽  
Aluminium Alloy ◽  
Surface Analysis ◽  
Corrosion Inhibition ◽  
Photoelectron Spectroscopy ◽  
Secondary Ion Mass Spectrometry ◽  
Attenuated Total Reflectance ◽  
X Ray ◽  
Inhibition Effect ◽  
Secondary Ion

The corrosion inhibition effect of five azole compounds on the corrosion of an AA6082 aluminium alloy in 5 wt.% NaCl solution at 25 and 50 °C was investigated using weight loss and electrochemical measurements. Only 2-mercaptobenzothiazole (MBT) showed a corrosion inhibition effect at both temperatures and was further studied in detail, including with the addition of potassium iodide as a possible intensifier. Surface analysis of the MBT surface layer was performed by means of attenuated total reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry techniques. The hydrophobicity of the MBT surface layer was also investigated.

Synergistic inhibition effect on methane/air explosions by N2-twin-fluid water mist containing sodium chloride additive

Fuel ◽  
2019 ◽  
Vol 253 ◽  
pp. 361-368 ◽  
Author(s):  
Bei Pei ◽  
Jie Li ◽  
Yan Wang ◽  
Xiaoping Wen ◽  
Minggao Yu ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Water Mist ◽  
Inhibition Effect ◽  
Synergistic Inhibition ◽  
Synergistic Inhibition Effect

Inhibitive effect of Ce(III) and La(III) cations for AA2219 aluminium alloy corrosion in sodium chloride medium

2014 ◽  
Vol 148 (1-2) ◽  
pp. 262-275 ◽  
Author(s):  
G. Venkatasubramanian ◽  
A. Sheik Mideen ◽  
Abhay K. Jha ◽  
M. Anbu Kulandainathan
Keyword(s):  
Sodium Chloride ◽  
Aluminium Alloy ◽  
Chloride Medium

scholarly journals Inhibition effect of cerium in hybrid sol-gel films on aluminium alloy AA2024

2010 ◽  
Vol 42 (4) ◽  
pp. 299-305 ◽  
Author(s):  
L. Paussa ◽  
N. C. Rosero-Navarro ◽  
F. Andreatta ◽  
Y. Castro ◽  
A. Duran ◽  
...  
Keyword(s):  
Aluminium Alloy ◽  
Sol Gel ◽  
Inhibition Effect ◽  
Sol Gel Films

Influence of anodic coatings on stress corrosion behaviour of 7017 aluminium alloy

2013 ◽  
Vol 61 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Panagiotis Spathis
Keyword(s):  
Sodium Chloride ◽  
Aluminium Alloy ◽  
Aluminium Alloys ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Corrosion Potential ◽  
Nacl Solution ◽  
Free Corrosion Potential ◽  
Content Type ◽  
Dry Air

Purpose – The purpose of this work was to study the cracking susceptibility of a 7017 aluminium alloy, after anodising under various conditions. Design/methodology/approach – Slow strain tests in dry air, laboratory air and sodium chloride solution were employed. Anodic oxide films were produced with various applied current densities and thicknesses, in horizontal or vertical orientation of the coatings, at the free corrosion potential and also at various anodic or cathodic potentials. For the interpretation of the results, a metallographic study of the specimens before and after straining to failure was carried out using a scanning electron microscope. Findings – The behaviour of anodic coatings was found to depend very much on the anodising conditions. The coatings reduced the ductility of the alloy in dry air but can actually increase the ductility in laboratory air and in 3.5 per cent sodium chloride solution. In most cases, the ductility of coated specimens was greater in 3.5 per cent NaCl solution than in dry air, possibly due to crack blunting by the aggressive environment. Anodic coatings moved the free corrosion potential of the alloy in the noble direction and both the anodised and the bare alloy generally suffered a reduction in ductility at potentials anodic or cathodic to the free corrosion potential, the fall being more rapid for the anodised alloy. Research limitations/implications – The mechanism causing the increased ductility of coated specimens in 3.5 per cent NaCl solution than in dry air remains yet to be confirmed. Practical implications – The selection of suitable anodic coatings for the protection of aluminium alloys against stress corrosion cracking depends on the anodising conditions. Originality/value – The paper provides information regarding the influence of anodising conditions on the anticorrosive properties of electrolytically prepared anodic coatings on aluminium alloys.

The Impact of Machining on the Corrosion Behaviour of AA7150-T651 Aluminium Alloy

2014 ◽  
Vol 794-796 ◽  
pp. 217-222 ◽  
Author(s):  
Bing Liu ◽  
Xiao Rong Zhou
Keyword(s):  
Sodium Chloride ◽  
Aluminium Alloy ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Corrosion Behaviour ◽  
Localized Corrosion ◽  
Bulk Alloy ◽  
Near Surface ◽  
Deformed Layer ◽  
The Impact

In the present study, the corrosion behaviour of machined AA7150-T651 aluminium alloy has been investigated. It was revealed that a near-surface deformed layer with thickness of 500 nm, characterized by ultrafine grains, is present between the alloy surface and the bulk alloy. In the deformed layer, the MgZn2 precipitates were absent, while segregation bands developed at the grain boundaries. The presence of the segregation bands, rich in magnesium and zinc, promoted localized corrosion in the deformed layer. Potentiodynamic polarization of the alloy in deaerated 3.5 wt. % sodium chloride solution revealed current surges at potentials of-750 mV (SCE) and-670 mV (SCE) respectively. The second current surge was associated with the fast dissolution of the deformed layer. Immersion testing of the alloy in 3.5 wt. % sodium chloride solution showed that the deformed layer acted as anode while the bulk alloy served as cathode during corrosion process.

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