Corrosion inhibition of 6061 Al–15vol. pct. SiC(p) composite and its base alloy in a mixture of sulphuric acid and hydrochloric acid by 4-(N,N-dimethyl amino) benzaldehyde thiosemicarbazone

Pinto, Geetha Mable; Nayak, Jagannath; Shetty, A. Nityananda

doi:10.1016/j.matchemphys.2010.10.006

Cited by 80 publications

(28 citation statements)

References 35 publications

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“…Figure 5 a shows the corresponding Nyquist diagram, and Figure 5 b,c the Bode diagrams of the investigated samples at 303 K. The Nyquist plots present a high frequency (HF) capacitive loop and a low frequency (LF) inductive loop. Comparable plots have also been reported by other investigators for the corrosion of aluminum and its alloys in acidic media [ 34 , 35 ]. The HF capacitive loop could be ascribed to the charge transfer resistance of the oxide layer on Al, and the LF loop to the process of H + ion relaxation and the adsorption of corrosive ions (mainly anions), i.e., chloride on or into the oxide film [ 36 , 37 , 38 ].…”

Section: Resultssupporting

confidence: 85%

Imidazolium-Based Ionic Liquid as Efficient Corrosion Inhibitor for AA 6061 Alloy in HCl Solution

et al. 2020

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The corrosion inhibition performance of an imidazolium-based ionic liquid (IL), 1-butyl-3-methylimidazolium thiocyanate (BMIm), was studied on AA 6061 alloy in 1 M HCl solution at 303 K, 333 K, and 363 K by gravimetric tests, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) analysis. Scanning electron microscopy with energy dispersive X-ray (SEM-EDX) and X-ray photoelectron spectroscopy (XPS) were used to detect the surface morphologies and chemical composition of the surface films. The results indicate that this IL inhibits AA 6061 corrosion in acid with maximum inhibition efficiencies of 98.2%, 86.6%, and 41.2% obtained at 303 K, 333 K, and 363 K respectively. Inhibition efficiency generally decreased with increasing immersion time; the major exception was at 303 K, whereby the inhibition efficiency was detected to increase with immersion time from 30 to 90 min and then decrease slightly beyond 90 min. The results indicate that BMIm is a mixed-type inhibitor with a predominant effect on cathodic reactions. Surface morphology analyses by SEM revealed less surface damage in the presence of the inhibitor. XPS analysis established the development of a protective film on the AA 6061 surface which was hydrophobic in nature.

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Section: Resultssupporting

confidence: 85%

Imidazolium-Based Ionic Liquid as Efficient Corrosion Inhibitor for AA 6061 Alloy in HCl Solution

et al. 2020

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“…It can be observed that in the sodium alginate‐containing solutions, the cathodic and anodic current density decreases significantly compared with that in the blank solution. It is also evident that the addition of sodium alginate at all the studied concentrations results in a slightly positive shift in the anodic corrosion potential .When the corrosion potential differs by more than 85 mV from that of the blank solution, the inhibitor can be considered definitely to be of either cathodic or anodic type . The polarization curves were analyzed through a Tafel extrapolation, with the result shown in Table .…”

Section: Resultsmentioning

confidence: 99%

Investigation of the inhibition effect of the environmentally friendly inhibitor sodium alginate on magnesium alloy in sodium chloride solution

Wei

Hou

et al. 2015

Materials & Corrosion

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The corrosion inhibition and adsorption behavior of sodium alginate on AZ31 magnesium alloy in 3.5 wt% sodium chloride solution is investigated. The results show that sodium alginate can effectively inhibit the corrosion of AZ31 magnesium alloy. With increasing sodium alginate concentration, the inhibition efficiency initially increases and then decreases. It reaches a maximum of 90.00% at a sodium alginate concentration of 500 ppm. The inhibition is due to adsorption of sodium alginate on the bare magnesium alloy surface, where it mixes with magnesium hydroxide to form a more continuous and compact film, which retards the corrosion of the alloy.

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“…Galvanostatic polarization curves indicated that the inhibitor behaves as mixedtype inhibitor. Pinto et al (2011) have characterized the inhibitory effect of 4-(N,Nimethylamino) benzaldehyde thiosemicarbazone (DMABT)on the corrosion behaviour of 6061 Al-15 vol. pct.…”

Section: Corrosion Inhibitorsmentioning

confidence: 99%

Corrosion Protection of Al Alloys: Organic Coatings and Inhibitors

Musa¹

2012

Recent Researches in Corrosion Evaluation and Protection

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Corrosion inhibition of 6061 Al–15vol. pct. SiC(p) composite and its base alloy in a mixture of sulphuric acid and hydrochloric acid by 4-(N,N-dimethyl amino) benzaldehyde thiosemicarbazone

Cited by 80 publications

References 35 publications

Imidazolium-Based Ionic Liquid as Efficient Corrosion Inhibitor for AA 6061 Alloy in HCl Solution

Imidazolium-Based Ionic Liquid as Efficient Corrosion Inhibitor for AA 6061 Alloy in HCl Solution

Investigation of the inhibition effect of the environmentally friendly inhibitor sodium alginate on magnesium alloy in sodium chloride solution

Corrosion Protection of Al Alloys: Organic Coatings and Inhibitors

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