The use of cerium and praseodymium mercaptoacetate as thiol-containing inhibitors for AA2024-T3

Catubig, Rainier; Hughes, Alison; Cole, Ivan; Hinton, Bruce; Forsyth, Maria

doi:10.1016/j.corsci.2013.12.001

Cited by 58 publications

(33 citation statements)

References 30 publications

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“…39 Catubig et al used rare earth mercaptoacetate inhibitors on AA2024. 40 The praseodymium mercaptoacetate was found to reduce the average corrosion current density to a greater extent that cerium mercaptoacetate. 40 In addition to acetate, other organic cerium salts, namely cerium dibuthyl phosphate, was investigated.…”

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confidence: 99%

“…40 The praseodymium mercaptoacetate was found to reduce the average corrosion current density to a greater extent that cerium mercaptoacetate. 40 In addition to acetate, other organic cerium salts, namely cerium dibuthyl phosphate, was investigated. 42 Compared to CeCl 3 , cerium dibuthyl phosphate offered a combined effect due to cerium oxide formation on Cu-rich areas and dibuthylphosphate on the overall surface with no preferential deposition.…”

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confidence: 99%

“…19 The effect of anions such as SO 4 2− , has only rarely been considered 24,38 and that of acetate anion are scarce. 8,33,[39][40][41] Mansfeld and Wang 33 used immersion in hot cerium acetate as a first step of the surface modification process of AA2024. Sugama modified aminopropylsilane triol by using Ce acetate and as a dopant in the concentration range from 0.2 to 10 wt%.…”

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Corrosion Inhibition of Pure Aluminium and Alloys AA2024-T3 and AA7075-T6 by Cerium(III) and Cerium(IV) Salts

Rodič

Milošev

2015

J. Electrochem. Soc.

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The corrosion protection of pure aluminium and its alloys AA2024-T3 and AA7075-T6 has been studied in 0.1 M NaCl with and without the addition of Ce(III) chloride, Ce(III) nitrate, Ce(III) acetate and Ce(IV) sulfate. The study of Ce(III) acetate has been scarce but is here shown to be the most effective of the cerium salts studied, especially for AA7075-T6. The inhibition effectiveness of cerium salts is: Ce(III) acetate > Ce(III) chloride > Ce(III) nitrate for the metals studied. Ce(IV) sulfate does not inhibit corrosion. Electrochemical potentiodynamic measurements were used to investigate the mechanism of inhibition by cerium salts. Immersion tests in 0.1 M NaCl, with and without the addition of Ce(III) chloride and Ce(III) acetate, were performed to determine the effects of the inhibitors on the extent of corrosion damage at the surface of all three metals. For pure aluminium the inhibitory effectiveness was 78.5%, 82.6% and 84.0% in the presence of 3 mM Ce(III) nitrate, chloride and acetate, respectively. Aluminium and its alloys 2024-T3 (AA2024-T3) and 7075-T6 (AA7075-T6) generally have good resistance to corrosion under atmospheric conditions. They are used as construction materials, primarily in aircraft applications, because of their physical characteristics such as rigidity and high strength-to-weight ratio.1,2 The main differences between aluminium and its alloys lie in their mechanical and corrosion properties. Aluminium is cold worked, whereas AA2024-T3 and AA7075-T6 are heat treated and cold worked (T3) or artificially aged (T6). The reason for alloying aluminium is to increase strength by forming intermetallic particles, IMs.

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Corrosion Inhibition of Pure Aluminium and Alloys AA2024-T3 and AA7075-T6 by Cerium(III) and Cerium(IV) Salts

Rodič

Milošev

2015

J. Electrochem. Soc.

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“…The cation still has a role in altering the solubility of the inhibitor. Finally, there are many reports of organic inhibitors being used for corrosion Zn, rare earths Carboxylates [152,153], organophosphates [131,132,154,155], polyphosphates [144], silicates [156], cerium molybdate [157,158], mercapto-compounds [149,159] Organic H or simple salts, most probably Na…”

Section: Inhibitor Requirementsmentioning

confidence: 99%

Self-healing coatings

Hughés¹

2015

Recent Advances in Smart Self-Healing Polymers and Composites

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“…Many new inhibitor systems have been the subject of extensive research, including rare earths [1][2][3][4][5][6][7][8][9][10][11][12][13][14], vanadates [15,16], organic compounds [17][18][19][20][21][22][23], sacrificial particles or functional properties in coatings [24][25][26][27][28], double-layered hydroxides containing inhibitors [29][30][31][32][33][34][35][36][37][38][39][40][41] and, in many cases, combinations of these. The search for alternatives is probably most intense for aerospace applications, where chromate inhibitors have been the mainstay of corrosion prevention for many decades.…”

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confidence: 99%

Particle Characterisation and Depletion of Li2CO3 Inhibitor in a Polyurethane Coating

et al. 2017

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The distribution and chemical composition of inorganic components of a corrosion-inhibiting primer based on polyurethane is determined using a range of characterisation techniques. The primer consists of a Li 2 CO 3 inhibitor phase, along with other inorganic phases including TiO 2 , BaSO 4 and Mg-(hydr)oxide. The characterisation techniques included particle induced X-ray and γ-ray emission spectroscopies (PIXE and PIGE, respectively) on a nuclear microprobe, as well as SEM/EDS hyperspectral mapping. Of the techniques used, only PIGE was able to directly map the Li distribution, although the distribution of Li 2 CO 3 particles could be inferred from SEM through using backscatter contrast and EDS. Characterisation was also performed on a primer coating that had undergone leaching in a neutral salt spray test for 500 h. Overall, it was found that Li 2 CO 3 leaching resulted in a uniform depletion zone near the surface, but also much deeper local depletion, which is thought to be due to the dissolution of clusters of Li 2 CO 3 particles that were connected to the external surface/electrolyte interface.

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The use of cerium and praseodymium mercaptoacetate as thiol-containing inhibitors for AA2024-T3

Cited by 58 publications

References 30 publications

Corrosion Inhibition of Pure Aluminium and Alloys AA2024-T3 and AA7075-T6 by Cerium(III) and Cerium(IV) Salts

Corrosion Inhibition of Pure Aluminium and Alloys AA2024-T3 and AA7075-T6 by Cerium(III) and Cerium(IV) Salts

Self-healing coatings

Particle Characterisation and Depletion of Li2CO3 Inhibitor in a Polyurethane Coating

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