Mechanistic Studies of the Corrosion of 2024 Aluminum Alloy in Nitrate Solutions

Blanc, Christine; Gastaud, Stéphane; Mankowski, Georges

doi:10.1149/1.1590327

Cited by 76 publications

(82 citation statements)

References 25 publications

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“…Generally the organic compounds containing hetero atoms like O, N, S and in some cases Se and P are found to have function as very effective corrosion inhibitors [2][3][4][5][6][7][8][9][10][11] . The efficiency of these compounds depends upon electron density present around the hetero atoms 12 .…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibitory Effects of Some Schiff's Bases on Mild Steel in Acid Media

Sethi¹,

Chaturvedi²,

Upadhyay³

et al. 2007

J. Chil. Chem. Soc.

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Weight loss and thermometric methods have been used to study the corrosion inhibition of mild steel in acidic solution (HCl and H 2 SO 4 ) by Schiff's bases viz. N-(4-N,N-dimethylaminobenzal)-p-anisidine (SB 1 ), N-(4-N,N-dimethylaminobenzal)-p-toluidine (SB 2 ) and N-(4-N,N-dimethylaminobenzal)-2,4-dinitroaniline (SB 3 ). The efficiencies have been compared with those of parent amines from which Schiff's bases have been derived. Results of inhibition efficiencies observed from these two methods are in good agreement and have been found to be dependent on the concentrations of inhibitors as well as those of acids. Inhibition efficiency of all inhibitors increases with increasing concentration of inhibitors. Efficiency also increases with increasing concentration of acids. Inhibition efficiency is more in case of HCl rather than in H 2 SO 4 . Inhibition efficiency was found maximum up to 95.55% for mild steel in HCl solution. Inhibition efficiencies of synthesised Schiff's bases have been found much more than their parent amines. It was observed that inhibition efficiency of all amines increases with increasing concentration of amines but decreases with increasing concentration of HCl and H 2 SO 4 .

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Section: Introductionmentioning

confidence: 99%

Corrosion Inhibitory Effects of Some Schiff's Bases on Mild Steel in Acid Media

Sethi¹,

Chaturvedi²,

Upadhyay³

et al. 2007

J. Chil. Chem. Soc.

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“…Particles, for instance, nitrogen, oxygen and sulfur are fit for surrounding coordinate covalent bond with metal inferable from their free electron sets. Exacerbates that have pi-securities like aldehydes, ketones, imines similarly generally show extraordinary inhibitive properties on account of correspondence of pi-orbital with metal surface [12]. In this review the TiO 2 improved for 2-(2-nitrobenzylidene) hydrazinecarbothioamide as consumption inhibitor for gentle steel in hydrochloric corrosive solution.…”

Section: Introductionmentioning

confidence: 93%

Nano Crystalline Titania Powders as Enhancement for 2-(2-Nitrobenzylidene) Hydrazinecarbothioamide as Corrosion Inhibitor

Fadhil¹

2017

JNUS

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The present investigation, represent arranging of nano-sized TiO 2 powder by method for sol-gel strategy through precursor hydrolysis of Titanium isopropoxide. Morphological reviews gained from SEM micrograph showed the particles with the round shapes are Anatase in nature. Crystalline size of TiO 2 powder has procured is 50-75 nm for Anatase at 550 ºC by controlling the sharpness. Weight lessening system has been used to consider the disintegration prevention effectiveness of 2-(2-nitrobenzylidene) hydrazinecarbothioamide enhanced by TiO 2 in HCl course of action. The results show that 2-(2-nitrobenzylidene) hydrazinecarbothioamide with TiO 2 raise the disintegration productivity from 87 to 96%. Disintegration obstacle viability increases with growing concentration of inhibitor and it moreover augments with extending joining of TiO 2 .

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“…However, in terms of developing models for corrosion initiation, it is important to understand all the pathways to the establishment of stable pits and the mechanisms for those pathways. Recently, Hughes and co-workers reported Metastable Stable Phenomenological Attack descripition Pitting (Chen, Gao et al 1996;Liao, Olive et al 1998) Trenching/S-phase etch [ (Kolics, Besing et al 2001) (Liao, Olive et al 1998;) , (Suter 2001;Blanc, Gastaud et al 2003) Severe pitting (Chen, Gao et al 1996;Liao, Olive et al 1998 Total charge (μC) < 13 (Trueman 2005) to 18 (Pride, Scully et al 1994) > 13 (Trueman 2005) to 18 (Pride, Scully et al 1994) i.r <10 -2 A/cm >10 -2 A/cm (Chen, Gao et al 1996). Hughes et al reported that the early stages of corrosion within these rings is characterised by H 2 evolution and extensive grain boundary attack on the surface which happens prior to, or at the same time as trenching around IM particles ( Figure 11).…”

Section: Corrosion and Particles Clustersmentioning

confidence: 99%